PG-ACS-5059_R07

HighlightsPage 1 of 2

September 2010Honeywell International Inc. Do not copy without express permission of Honeywell.

Honeywell International Inc.15001 N.E. 36th Street -- P.O. Box 97001Redmond, Washington 98073--9701U.S.A.CAGE: 97896Telephone: 1--800--601--3099 (U.S.A./Canada)Telephone: 1--602--365--3099 (International)Web site: http://portal.honeywell.com/wps/portal/aero

TO: HOLDERS OF THE TCAS II/ACAS II COLLISIONAVOIDANCESYSTEMPILOT’SGUIDE, HONEYWELLPUB.NO. ACS--5059

REVISION NO. 7 DATED SEPTEMBER 2010

HIGHLIGHTS

This guide has been revised to reflect changes and added information.The List of Effective Pages (LEP) identifies the current revision to eachpage in this guide.

This revision is a full replacement. All changed pages have a new date,as identified in the List of Effective Pages. The publication isreformatted, but revision bars are not shown for format changes.Revision bars identify the changed data.

Please replace your copy of this guide with the attached completerevision. The Record of Revisions page shows Honeywell has alreadyput Revision No. 7 dated September 2010 in the guide.

HighlightsPage 2 of 2

September 2010Honeywell International Inc. Do not copy without express permission of Honeywell.

Blank Page

1.2.

This document contains technical data and is subject to U.S. exportregulations. These commodities, technology, or software were exportedfrom the United States in accordance with the export administration

regulations. Diversion contrary to U.S. law is prohibited.ECCN: 7E994, NLR Eligible

Printed in U.S.A. Pub. No. ACS--5059--007 February 2000Revised September 2010

Page T--1Honeywell International Inc. Do not copy without express permission of Honeywell.

Honeywell International Inc.15001 N.E. 36th Street -- P.O. Box 97001Redmond, Washington 98073--9701U.S.A.CAGE: 97896

Telephone: 1--800--601--3099 (U.S.A./Canada)Telephone: 1--602--365--3099 (International)Web site: http://portal.honeywell.com/wps/portal/aero

TCAS II/ACAS II CollisionAvoidanceSystem

Pilot’s Guide

TCAS II/ACAS II Collision Avoidance System Pilot’s Guide

ACS--5059REV 7 Sep 2010Page T--2

Honeywell International Inc. Do not copy without express permission of Honeywell.

Honeywell--ConfidentialTHIS COPYRIGHTED WORK AND ALL INFORMATION ARETHE PROPERTY OF HONEYWELL INTERNATIONAL INC.,CONTAIN TRADE SECRETS AND MAY NOT, IN WHOLE ORIN PART, BE USED, DUPLICATED, OR DISCLOSED FORANY PURPOSE WITHOUT PRIOR WRITTEN PERMISSIONOF HONEYWELL INTERNATIONAL INC. ALL RIGHTSRESERVED.

Honeywell Materials License Agreement

The documents and information contained herein (“theMaterials”) are the proprietary data of HoneywellInternational Inc. and Honeywell Intellectual Properties Inc(collectively “Honeywell”). These Materials are providedfor the exclusive use of Honeywell Service Centers;Honeywell--authorized repair facilities; operators ofHoneywell aerospace products subject to an applicableproduct support agreement, their whollyowned--subsidiaries or a formally designated third partyservice provider; and direct recipients of Materials fromHoneywell’s Aerospace Technical Publication Distribution.The terms and conditions of this License Agreementgovern your use of these Materials, except to the extentthat any terms and conditions of another applicableagreement with Honeywell regarding the operation,maintenance, or repair of Honeywell aerospace productsconflict with the terms and conditions of this LicenseAgreement, in which case the terms and conditions of theother agreement will govern. However, this LicenseAgreement will govern in the event of a conflict betweenits terms and conditions and those of a purchase order oracknowledgement.

1. License Grant -- If you are a party to an applicable product supportagreement, a Honeywell Service Center agreement, or an authorizedrepair facility agreement, Honeywell hereby grants you a limited,non--exclusive license to use these Materials to operate, maintain, orrepair Honeywell aerospace products only in accordance with thatagreement.

If you are a direct recipient of these Materials from Honeywell’sAerospace Technical Publication Distribution and are not a party to anagreement related to the operation, maintenance or repair ofHoneywell aerospace products, Honeywell hereby grants you a limited,


ACS--5059REV 7 Sep 2010 Page T--3


non--exclusive license to use these Materials to maintain or repair thesubject Honeywell aerospace products only at the facility to whichthese Materials have been shipped (“the Licensed Facility”). Transferof the Materials to another facility owned by you is permitted only if theoriginal Licensed Facility retains no copies of the Materials and youprovide prior written notice to Honeywell.

2. Rights In Materials -- Honeywell retains all rights in these Materialsand in any copies thereof that are not expressly granted to you,including all rights in patents, copyrights, trademarks, and tradesecrets. No license to use any Honeywell trademarks or patents isgranted under this License Agreement.

3. Confidentiality -- You acknowledge that these Materials containinformation that is confidential and proprietary to Honeywell. You agreeto take all reasonable efforts to maintain the confidentiality of theseMaterials.

4. Assignment And Transfer -- This License Agreement may beassigned to a formally designated service designee or transferred to asubsequent owner or operator of an aircraft containing the subjectHoneywell aerospace products. However, the recipient of any suchassignment or transfer must assume all of your obligations under thisLicense Agreement. No assignment or transfer shall relieve any partyof any obligation that such party then has hereunder.

5. Copies of Materials -- Unless you have the express writtenpermission of Honeywell, you may not make or permit making ofcopies of the Materials. Notwithstanding the foregoing, you may makecopies of only portions of the Material for your internal use. You agreeto return the Materials and any copies thereof to Honeywell upon therequest of Honeywell.

6. Term -- This License Agreement is effective until terminated as setforth herein. This License Agreement will terminate immediately,without notice from Honeywell, if you fail to comply with any provisionof this License Agreement or will terminate simultaneously with thetermination or expiration of your applicable product support agreement,authorized repair facility agreement, or your formal designation as athird party service provider. Upon termination of this LicenseAgreement, you will return these Materials to Honeywell withoutretaining any copies and will have one of your authorized officerscertify that all Materials have been returned with no copies retained.

7. Remedies -- Honeywell reserves the right to pursue all availableremedies and damages resulting from a breach of this LicenseAgreement.


ACS--5059REV 7 Sep 2010Page T--4


8. Limitation of Liability -- Honeywell does not make anyrepresentation regarding the use or sufficiency of the Materials.THERE ARE NO OTHER WARRANTIES, WHETHER WRITTEN ORORAL, EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOTLIMITED TO, (i) WARRANTIES ARISING FROM COURSE OFPERFORMANCE, DEALING, USAGE, OR TRADE, WHICH AREHEREBY EXPRESSLY DISCLAIMED, OR (ii) WARRANTIESAGAINST INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTSOF THIRD PARTIES, EVEN IF HONEYWELL HAS BEEN ADVISEDOF ANY SUCH INFRINGEMENT. IN NO EVENT WILL HONEYWELLBE LIABLE FOR ANY INCIDENTAL DAMAGES, CONSEQUENTIALDAMAGES, SPECIAL DAMAGES, INDIRECT DAMAGES, LOSS OFPROFITS, LOSS OF REVENUES, OR LOSS OF USE, EVEN IFINFORMED OF THE POSSIBILITY OF SUCH DAMAGES. TO THEEXTENT PERMITTED BY APPLICABLE LAW, THESE LIMITATIONSAND EXCLUSIONS WILL APPLY REGARDLESS OF WHETHERLIABILITY ARISES FROM BREACH OF CONTRACT, WARRANTY,TORT (INCLUDING BUT NOT LIMITED TO NEGLIGENCE), BYOPERATION OF LAW, OR OTHERWISE.

9. Controlling Law -- This License shall be governed and construed inaccordance with the laws of the State of New York without regard tothe conflicts of laws provisions thereof. This license sets forth the entireagreement between you and Honeywell and may only be modified by awriting duly executed by the duly authorized representatives of theparties.

Copyright -- Notice

Copyright 2000, 2010, Honeywell International Inc. All rights reserved.

Honeywell and SPEX are registered trademarks of HoneywellInternational Inc.

All other marks are owned by their respective companies.


ACS--5059REV 7 Sep 2010 RR--1

Record of Revisions


Record of Revisions

For each revision, put the changed pages in your guide and discard thereplaced pages. Write the revision number and date, and the date putin the guide. Put your initials in the applicable columns on the Recordof Revisions. The initial H shows that Honeywell put the changedpagesin the guide.

RevisionNumber

RevisionDate

InsertionDate By

1

2

3

4

5

6 Jan 2004

7 Sep 2010 Sep 2010 H


ACS--5059REV 7 Sep 2010

Record of RevisionsRR--2


Blank Page


ACS--5059REV 7 Sep 2010 LEP--1

List of Effective Pages



Subheading and Page Date Subheading and Page Date

Title

T--1 H Sep 2010

T--2 H Sep 2010

T--3 H Sep 2010

T--4 H Sep 2010

Record of Revisions

RR--1 H Sep 2010

RR--2 H Sep 2010


LEP--1 H Sep 2010

LEP--2 H Sep 2010

Table of Contents

TC--1 H Sep 2010

TC--2 H Sep 2010

TC--3 H Sep 2010

TC--4 H Sep 2010

TC--5 H Sep 2010

TC--6 H Sep 2010

TC--7 H Sep 2010

TC--8 H Sep 2010

Introduction

1--1 H Sep 2010

1--2 H Sep 2010

1--3 H Sep 2010

1--4 H Sep 2010

1--5 H Sep 2010

1--6 H Sep 2010

TCAS II Operation

2--1 H Sep 2010

2--2 H Sep 2010

2--3 H Sep 2010

2--4 H Sep 2010

2--5 H Sep 2010

2--6 H Sep 2010

2--7 H Sep 2010

2--8 H Sep 2010

2--9 H Sep 2010

2--10 H Sep 2010

2--11 H Sep 2010

2--12 H Sep 2010

2--13 H Sep 2010

2--14 H Sep 2010

2--15 H Sep 2010

2--16 H Sep 2010

2--17 H Sep 2010

2--18 H Sep 2010

2--19 H Sep 2010

2--20 H Sep 2010

Controls and Displays

3--1 H Sep 2010

3--2 H Sep 2010

3--3 H Sep 2010

3--4 H Sep 2010

3--5 H Sep 2010

3--6 H Sep 2010

3--7 H Sep 2010

3--8 H Sep 2010

3--9 H Sep 2010

3--10 H Sep 2010

3--11 H Sep 2010

3--12 H Sep 2010

3--13 H Sep 2010

3--14 H Sep 2010

3--15 H Sep 2010

3--16 H Sep 2010

3--17 H Sep 2010

3--18 H Sep 2010

3--19 H Sep 2010

3--20 H Sep 2010

3--21 H Sep 2010

3--22 H Sep 2010

3--23 H Sep 2010

3--24 H Sep 2010

3--25 H Sep 2010

3--26 H Sep 2010

H indicates a changed or added page.F indicates a foldout page.


ACS--5059REV 7 Sep 2010

List of Effective PagesLEP--2


Subheading and Page Date Subheading and Page Date

Controls and Displays (cont)

3--27 H Sep 2010

3--28 H Sep 2010

System Considerations

4--1 H Sep 2010

4--2 H Sep 2010

4--3 H Sep 2010

4--4 H Sep 2010

4--5 H Sep 2010

4--6 H Sep 2010

Appendix A -- Tests

A--1 H Sep 2010

A--2 H Sep 2010

A--3 H Sep 2010

A--4 H Sep 2010

A--5 H Sep 2010

A--6 H Sep 2010

A--7 H Sep 2010

A--8 H Sep 2010

Appendix B -- TCAS II Operation(Change 7.0)

B--1 H Sep 2010

B--2 H Sep 2010

B--3 H Sep 2010

B--4 H Sep 2010

B--5 H Sep 2010

B--6 H Sep 2010

B--7 H Sep 2010

B--8 H Sep 2010

B--9 H Sep 2010

B--10 H Sep 2010

B--11 H Sep 2010

B--12 H Sep 2010

B--13 H Sep 2010

B--14 H Sep 2010

Appendix C -- TCAS II Operation(Change 6.04a)

C--1 H Sep 2010

C--2 H Sep 2010

C--3 H Sep 2010

C--4 H Sep 2010

C--5 H Sep 2010

C--6 H Sep 2010

C--7 H Sep 2010

C--8 H Sep 2010

C--9 H Sep 2010

C--10 H Sep 2010

C--11 H Sep 2010

C--12 H Sep 2010

C--13 H Sep 2010

C--14 H Sep 2010

C--15 H Sep 2010

C--16 H Sep 2010

Acronyms and Abbreviations

Abbrev--1 H Sep 2010

Abbrev--2 H Sep 2010

Glossary

Gloss--1 H Sep 2010

Gloss--2 H Sep 2010

Gloss--3 H Sep 2010

Gloss--4 H Sep 2010

Index

Index--1 H Sep 2010

Index--2 H Sep 2010

Index--3 H Sep 2010

Index--4 H Sep 2010


ACS--5059REV 7 Sep 2010 TC--1

Table of Contents


Table of Contents

Section Page

1. INTRODUCTION 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TCAS II Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . .TCAS II System 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . .

Honeywell Product Support 1-5. . . . . . . . . . . . . . . . . . . .Customer Support 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Global Customer Care (GCC) 1-5. . . . . . . . . . . . . . .Honeywell Aerospace Technical Publications 1-6. .

2. TCAS II OPERATION 2-1. . . . . . . . . . . . . . . . . . . . . . . .

Introduction 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Typical TCAS II Encounter 2-2. . . . . . . . . . . . . . . . . . . .Traffic Display Symbols 2-3. . . . . . . . . . . . . . . . . . . . . . .

Non--Threat Traffic 2-3. . . . . . . . . . . . . . . . . . . . . . . . .Proximity Intruder Traffic 2-4. . . . . . . . . . . . . . . . . . .Traffic Advisory (TA) 2-5. . . . . . . . . . . . . . . . . . . . . . .Resolution Advisory (RA) 2-5. . . . . . . . . . . . . . . . . . .

Off Scale Traffic 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .RA/VSI Instrument 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . .TA/VSI Instrument 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . .How to Fly Typical TCAS II Commands(Change 7.1) 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Indications and Voice Announcements 2-9. . . . . . .

Audio Announcements (Change 7.1) 2-19. . . . . . . . . . . .

3. CONTROLS AND DISPLAYS 3-1. . . . . . . . . . . . . . . . .

Introduction 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Transponder/TCAS Control Unit (CTA--81A,CTA--81B, CTA--81C) 3-1. . . . . . . . . . . . . . . . . . . . . . . .

CTA--81A, CTA--81B, CTA--81C Controls andDisplays 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Function Selector CTA--81A/C Control UnitOnly (Selects Operating Mode) 3-4. . . . . . . . . . . .

Function Selector CTA--81B Control Unit Only(Selects Operating Mode) 3-5. . . . . . . . . . . . . . . . .

Transponder/TCAS Control Unit (CTA--100A) 3-6. . . .CTA--100A Controls and Displays 3-7. . . . . . . . . . . .

Weather Radar Indicators (RDR--4, RDR--1F,RDR--1E) 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PPI--1T, PPI--1U, and PPI--4B IndicatorControls 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Weather Modes Message Format 3-15. . . . . . . . . . . . . .


ACS--5059REV 7 Sep 2010

Table of ContentsTC--2


Table of Contents (cont)

Section Page

3. CONTROLS AND DISPLAYS (CONT)

TCAS Mode Message Format 3-16. . . . . . . . . . . . . . . . .Fault Message Format 3-18. . . . . . . . . . . . . . . . . . . . . . . .ITA--81A Dedicated TCAS Traffic Display 3-19. . . . . . . .

ITA--81A Dedicated TCAS Traffic DisplayControls 3-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IVA--81B RA/VSI Resolution Advisory/VerticalSpeed Indicator 3-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IVA--81A/IVA--81D TA/VSI Traffic Advisory/Vertical Speed Indicator 3-22. . . . . . . . . . . . . . . . . . . . .Configured for TA Select 3-23. . . . . . . . . . . . . . . . . . .Configured for Switchable 3-23. . . . . . . . . . . . . . . . . .Display Message Locations 3-24. . . . . . . . . . . . . . . . .

Typical TA/VSI Scenarios 3-26. . . . . . . . . . . . . . . . . . . . .

4. SYSTEM CONSIDERATIONS 4-1. . . . . . . . . . . . . . . . .

Introduction 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Warnings and Limitations 4-1. . . . . . . . . . . . . . . . . . . . . .Cautions 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Notes 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

APPENDIXES

A TESTS A--1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction A--1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Functional and Automatic Self--Test A--1. . . . . . . . . . . . .RA/VSI Flags and Test Indicators A--4. . . . . . . . . . . . . . .RA/VSI and TA/VSI Lamp Tests A--5. . . . . . . . . . . . . . . .

RA/VSI Lamp Test A--5. . . . . . . . . . . . . . . . . . . . . . . . .TA/VSI Lamp Test A--6. . . . . . . . . . . . . . . . . . . . . . . . .

Failure Conditions A--8. . . . . . . . . . . . . . . . . . . . . . . . . . . .Test Audio Inhibit A--8. . . . . . . . . . . . . . . . . . . . . . . . . .CTA--81B Clockwise Test Position A--8. . . . . . . . . . .

Post Flight Reports A--8. . . . . . . . . . . . . . . . . . . . . . . . . . .

B TCAS II OPERATION (CHANGE 7.0) B--1. . . . . . . . . . .

Introduction B--1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .How to Fly Typical TCAS II Commands(Change 7.0) B--1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Indications and Voice Announcements B--1. . . . . . .

Audio Announcements (Change 7.0) B--11. . . . . . . . . . . .


ACS--5059REV 7 Sep 2010 TC--3

Table of Contents



Section Page

B TCAS II OPERATION (CHANGE 7.0) (CONT)

Controls and Displays (Change 7.0) B--13. . . . . . . . . . . .Warnings and Limitations B--13. . . . . . . . . . . . . . . . . . . . . .Cautions B--13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C TCAS II OPERATION (CHANGE 6.04A) C--1. . . . . . . .

Introduction C--1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .How to Fly Typical TCAS II Commands(Change 6.04a) C--2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Indications and Voice Announcements(Change 6.04A) C--2. . . . . . . . . . . . . . . . . . . . . . . . . .

Audio Announcements (Change 6.04A) C--11. . . . . . . . .Controls and Displays (Change 6.04A) C--13. . . . . . . . . .

Transponder/TCAS Control Unit -- CTA--81A,CTA--81B, CTA--81C C--13. . . . . . . . . . . . . . . . . . . . .

Weather Radar Indicators (RDR--4, RDR--1F,RDR--1E) C--14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PPI--1T, PPI--1U, and PPI--4B IndicatorControls C--14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ITA--81A Dedicated TCAS Traffic DisplayControls C--15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Warnings and Limitations C--15. . . . . . . . . . . . . . . . . . . . . .Cautions C--15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ACRONYMS AND ABBREVIATIONS Abbrev--1. . . . . . . . . . . . .

GLOSSARY Gloss--1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INDEX Index--1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


ACS--5059REV 7 Sep 2010




List of FiguresFigure Page

1--1 TCAS II Components 1-3. . . . . . . . . . . . . . . . . . . . . . . . .1--2 TCAS II Situation Example 1-4. . . . . . . . . . . . . . . . . . . .

2--1 Traffic Encounter 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .2--2 Non--threat Traffic 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . .2--3 Proximity Intruder Traffic 2-4. . . . . . . . . . . . . . . . . . . . . .2--4 Traffic Advisory 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2--5 Resolution Advisory 2-6. . . . . . . . . . . . . . . . . . . . . . . . . .2--6 Off Scale Traffic 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2--7 Same Traffic on 10--Mile Range Weather Mode

Format 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2--8 TCAS Situation Display (Change 7.1) 2-10. . . . . . . . . . .2--9 VSI Display: Climb (Change 7.1) 2-10. . . . . . . . . . . . . . .2--10 TCAS Situation Display (Change 7.1) 2-11. . . . . . . . . . .2--11 VSI Display: Level Off (Change 7.1) 2-11. . . . . . . . . . . .2--12 TCAS Situation Display (Change 7.1) 2-12. . . . . . . . . . .2--13 VSI Indication: Maintain Vertical Speed

(Change 7.1) 2-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2--14 TCAS Situation Display (Change 7.1) 2-13. . . . . . . . . . .2--15 VSI Indication: Monitor Vertical Speed

(Change 7.1) 2-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2--16 TCAS Situation Display (Change 7.1) 2-14. . . . . . . . . . .2--17 No TCAS Indications (Change 7.1) 2-14. . . . . . . . . . . . .2--18 TCAS Situation Display (Change 7.1) 2-15. . . . . . . . . . .2--19 VSI Indication: Maintain Vertical Speed

(Change 7.1) 2-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2--20 TCAS Situation Display (Change 7.1) 2-16. . . . . . . . . . .2--21 VSI Indication: Descend (Change 7.1) 2-16. . . . . . . . . .2--22 TCAS Situation Display (Change 7.1) 2-17. . . . . . . . . . .2--23 VSI Indication: Climb Now (Change 7.1) 2-17. . . . . . . . .2--24 TCAS Situation Display (Change 7.1) 2-18. . . . . . . . . . .2--25 No TCAS Indications (Change 7.1) 2-18. . . . . . . . . . . . .

3--1 CTA--81A Dual Mode S/TCAS Control Unit 3-1. . . . . .3--2 CTA--81B Mode S/ATCRBS/TCAS Control Unit 3-2. .3--3 CTA--81 A/C Function Selector 3-4. . . . . . . . . . . . . . . . .3--4 CTA--81B Function Selector 3-5. . . . . . . . . . . . . . . . . . .3--5 CTA--100A Mode S/TCAS Control Unit (Rotary) 3-6. .3--6 CTA--100A Mode S/TCAS Control Unit (Keypad) 3-6.3--7 Function Selections 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . .3--8 RDR--4 (PPI--4B) 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .


ACS--5059REV 7 Sep 2010 TC--5

Table of Contents



List of Figures (cont)

Figure Page

3--9 RDR--1F (PPI--1T) 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . .3--10 RDR--1E (PPI--1U) 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . .3--11 Weather Modes Window 3-15. . . . . . . . . . . . . . . . . . . . . .3--12 TCAS Mode Window 3-16. . . . . . . . . . . . . . . . . . . . . . . . .3--13 Fault Message Format 3-18. . . . . . . . . . . . . . . . . . . . . . . .3--14 ITA--81A Dedicated TCAS Traffic Display 3-19. . . . . . . .3--15 IVA--81B RA/VSI 3-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3--16 IVA--81A/IVA--81D TA/VSI 3-22. . . . . . . . . . . . . . . . . . . . .3--17 IVA--81A/IVA--81D Controls 3-23. . . . . . . . . . . . . . . . . . . .3--18 Display Message Locations 3-24. . . . . . . . . . . . . . . . . . . .3--19 Climb Advisory 3-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3--20 Do Not Descend 3-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3--21 Traffic Advisory 3-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3--22 Do Not Descend 3-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3--23 Descend Advisory 3-28. . . . . . . . . . . . . . . . . . . . . . . . . . . .

A--1 TCAS Display Test Pattern A--2. . . . . . . . . . . . . . . . . . . .A--2 TA/VSI Test Pattern A--3. . . . . . . . . . . . . . . . . . . . . . . . . .A--3 Sequential Lamp Test A--4. . . . . . . . . . . . . . . . . . . . . . . . .A--4 Fixed Test Command A--5. . . . . . . . . . . . . . . . . . . . . . . . .A--5 Red Test Pattern A--6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .A--6 Green Test Pattern A--7. . . . . . . . . . . . . . . . . . . . . . . . . . .

B--1 TCAS Situation Display (Change 7.0) B-2. . . . . . . . . . .B--2 VSI Display: Climb Advisory (Change 7.0) B-2. . . . . . .B--3 TCAS Situation Display (Change 7.0) B-3. . . . . . . . . . .B--4 VSI Display: Adjust Vertical Speed (Change 7.0) B-3.B--5 TCAS Situation Display (Change 7.0) B-4. . . . . . . . . . .B--6 VSI Display: Maintain Vertical Speed

(Change 7.0) B-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B--7 TCAS Situation Display (Change 7.0) B-5. . . . . . . . . . .B--8 VSI Display: Monitor Vertical Speed

(Change 7.0) B-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B--9 TCAS Situation Display (Change 7.0) B-6. . . . . . . . . . .B--10 No TCAS Indications (Change 7.0) B-6. . . . . . . . . . . . .B--11 TCAS Situation Display (Change 7.0) B-7. . . . . . . . . . .B--12 VSI Display: Maintain Vertical Speed

(Change 7.0) B-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B--13 TCAS Situation Display (Change7.0) B-8. . . . . . . . . . . .B--14 VSI Indication: Descend (Change 7.0) B-8. . . . . . . . . .B--15 TCAS Situation Display (Change 7.0) B-9. . . . . . . . . . .


ACS--5059REV 7 Sep 2010




List of Figures (cont)

Figure Page

B--16 VSI Indication: Climb Now (Change 7.0) B-9. . . . . . . . .B--17 TCAS Situation Display (Change 7.0) B-10. . . . . . . . . . .B--18 No TCAS Indications (Change 7.0) B-10. . . . . . . . . . . . .

C--1 TCAS Situation Display (Change 6.04a) C--3. . . . . . . . .C--2 VSI Indication: Climb (Change 6.04a) C--3. . . . . . . . . . .C--3 TCAS Situation Display (Change 6.04a) C--4. . . . . . . . .C--4 VSI Indication: Monitor Vertical Speed (Do Not

Climb or Descend) (Change 6.04a) C--4. . . . . . . . . . . .C--5 TCAS Situation Display (Change 6.04a) C--5. . . . . . . . .C--6 VSI Indication: Monitor Vertical Speed (Do Not

Descend) (Change 6.04a) C--5. . . . . . . . . . . . . . . . . . . .C--7 TCAS Situation Display (Change 6.04a) C--6. . . . . . . . .C--8 No TCAS Indications (Change 6.04a) C--6. . . . . . . . . . .C--9 TCAS Situation Display (Change 6.04a) C--7. . . . . . . . .C--10 VSI Indication: Monitor Vertical Speed (Maintain

Climb Rate) (Change 6.04a) C--7. . . . . . . . . . . . . . . . . .C--11 TCAS Situation Display (Change 6.04a) C--8. . . . . . . . .C--12 VSI Indication: Descend (Change 6.04a) C--8. . . . . . . .C--13 TCAS Situation Display (Change 6.04a) C--9. . . . . . . . .C--14 VSI Indication: Climb Now (Change 6.04a) C--9. . . . . . .C--15 TCAS Situation Display (Change 6.04a) C--10. . . . . . . . .C--16 No TCAS Indications (Change 6.04a) C--10. . . . . . . . . . .


ACS--5059REV 7 Sep 2010 TC--7

Table of Contents



List of Tables

Table Page

2--1 Audio Messages (Change 7.1) 2-19. . . . . . . . . . . . . . . . .2--2 Resolution Advisories and Synthesized Voice

Announcements (Change 7.1) 2-19. . . . . . . . . . . . . . . .2--3 Resolution Advisories (Change 7.1) 2-20. . . . . . . . . . . . .

3--1 Weather and TCAS Modes From FunctionSelector 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3--2 Weather and TCAS Modes From TCAS AUTOButton 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3--3 Weather Modes 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3--4 TCAS Modes 3-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3--5 Fault Annunciators 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . .3--6 TCAS Mode/Failure 3-25. . . . . . . . . . . . . . . . . . . . . . . . . .

B--1 Audio Messages (Change 7.0) B-11. . . . . . . . . . . . . . . . .B--2 Resolution Advisories and Synthesized Voice

Announcements (Change 7.0) B-12. . . . . . . . . . . . . . . .B--3 Resolution Advisories (Change 7.0) B-13. . . . . . . . . . . . .

C--1 Audio Messages (Change 6.04a) C--11. . . . . . . . . . . . . . .C--2 Resolution Advisories and Synthesized Voice

Announcements (Change 6.04a) C--12. . . . . . . . . . . . . .C--3 Resolution Advisories (Change 6.04a) C--13. . . . . . . . . .


ACS--5059REV 7 Sep 2010



Blank Page


ACS--5059REV 7 Sep 2010 1-1

Introduction


1. Introduction

This guide applies to systems that are compliant to RTCA DO185BMOPS Change 7.1, RTCA DO--185A MOPS Change 7.0, and RTCADO--185 Change 6.04a. Reference to DO--185 MOPS Change 7.0 hasbeen moved to Appendix B of this pilot’s guide. Reference to DO--185MOPS Change 6.04a has been moved to Appendix C of this pilot’sguide. These systems are referred to as TCAS II (traffic alert andcollision avoidance system) in the United States and ACAS II (airbornecollision avoidance system) internationally. The terminology is usedinterchangeably and, for the purpose of discussion, TCAS II is theterminology used in this guide.

TCAS II OVERVIEW

TCAS II is a system used for detecting and tracking aircraft in thevicinity of your aircraft and shown in Figure 1--1. By interrogating thetransponders it analyzes the replies to determine range, bearing, andif reporting altitude, the relative altitude of the intruder. When theTCAS II processor determines that a possible collision hazard exists,it issues visual and audio advisories to the crew for proper verticalavoidance maneuvers. TCAS is unable to detect any intruding aircraftwithout an operating transponder.

There are two types of cockpit displays for TCAS II: the resolutionadvisory (RA) display and the traffic advisory (TA) display. The RAdisplay is incorporated into the vertical speed indicator (VSI). By lightingred and green areas around the dial, it displays the required rate, orlimitation of climb or descent, to avoid a possible collision.

The TA display shows the intruding aircraft’s relative position andaltitude with a trend arrow to indicate if it is climbing or descending atgreater than 500 feet per minute. This TA display may be shown on theweather radar indicator, on a dedicated TCAS display, or a TA/VSIdisplay.

The TA display identifies the relative threat of each intruder by usingvarious symbols and colors.

Complementing the displays, TCAS II gives correct synthesized voiceannouncements. A complete list of symbols and announcements isgiven in the Operation section of this pilot’s guide.

Air traffic control (ATC) procedures and the see and avoid conceptcontinue to be the primary means of ensuring aircraft separation in theabsence of an RA. When an RA is issued, however, compliance withthe RA is required.


ACS--5059REV 7 Sep 2010

Introduction1-2


The new procedures are the result of the experience gained from adecade of worldwide TCAS II operations and as a result of severalmonitoring programs. The most important change is related to theprocedure when an RA is generated (from Revision of PANS--OPS,Doc 8168:Operation of TCAS II equipment). Thenewprocedureclearlystates that:

D Pilots are required to respond immediately by following the RA asindicated, unless doing so would jeopardize the safety of theairplane

D Pilots are required to follow theRAeven if there is a conflict betweenthe RA and an ATC instruction

D Pilots must not maneuver in the opposite sense of an RA

NOTE: Visually acquired traffic may not be the same traffic resultingin an RA. Visual perception of an encounter may bemisleading, particularly at night.

D Pilots must, as soon as permitted by flight crew workload, notify thecorrect ATC unit of the RA, including the direction of any deviationfrom the current ATC instruction or clearance.


ACS--5059REV 7 Sep 2010 1-3

Introduction


Figure 1--1TCAS II Components


ACS--5059REV 7 Sep 2010

Introduction1-4


TCAS II System

The TCAS II system is compatible with and independent of the ATCsystem. The TCAS II system determines whether a traffic threat existsand supplies visual and aural alerts to the crew using the following:

D Position information displayed on CRT and/or TA/VSI

D Vertical guidance displayed on VSI

D Synthesized voice.

TCAS II calculates the correct vertical evasive maneuver andcoordinates maneuvers of two or more TCAS II--equipped aircraft bythe way of Mode S transponder communication between aircraft. Adepiction of a TCAS II event is shown in Figure 1--2.

Figure 1--2TCAS II Situation Example


ACS--5059REV 7 Sep 2010 1-5

Introduction


HONEYWELL PRODUCT SUPPORT

The Honeywell SPEX program for corporate operators supplies anextensive exchange and rental service that complements a worldwidenetwork of support centers. An inventory of more than 9,000 sparecomponents assures that the Honeywell equipped aircraft will bereturned to service promptly and economically. This service is availableboth during and after warranty.

The aircraft owner/operator is required to ensure that units suppliedthrough this program have been approved in accordance with theirspecific maintenance requirements.

All articles are returned to Reconditioned Specifications limits whenthey are processed through a Honeywell repair facility. All articles areinspected by quality control personnel to verify proper workmanshipand conformity to Type Design and to certify that the article meets allcontrolling documentation. Reconditioned Specification criteria are onfile at Honeywell facilities and are available for review. All exchangeunits are updated with the latest performance reliability MODs on anattrition basis while in the repair cycle.

For more information regarding the SPEX program, includingmaintenance, pricing, warranty, support, and access to an electroniccopy of the Exchange/Rental Program for Corporate Operators, Pub.No. A65--8200--001, you can go to the Honeywell web site at:http://www.honeywell.com/sites/aero/Avionics_Services1.htm.

CUSTOMER SUPPORT

For support of products or to request the latest revision to a publication,contact the local Honeywell customer support.

Global Customer Care (GCC)

For all aerospace inquiries including:

D Technical assistance

D Aircraft on ground (AOG)

D Sales: new and exchange

D Repair and overhaul

D Supply chain optimization

D Rentals

D Return material authorization (RMA).


ACS--5059REV 7 Sep 2010

Introduction1-6


Use the following Global Customer Care (GCC) contact numbers:

D Fax: 1--602--822--7272

D Phone: 1--800--601--3099 (U.S.A./Canada)

D Phone: 1--602--365--3099 (International).

Also, the Global Customer Care (GCC) is available if you need to:

D Identify a change of address, telephone number, or e--mail address

D Register for revisions of this guide.

Honeywell Aerospace Technical Publications

If you have access to the Internet, go to theHoneywell OnlineTechnicalPublications web site athttp://portal.honeywell.com/wps/portal/aero to:

D Download or see publications online

D Make an order for a publication

D Tell Honeywell of a possible data error (report a discrepancy) in apublication.

If you do not have access to the Honeywell Online TechnicalPublications web site and need technical publications information:

D Send an e--mail message to the Global Customer Care (GCC) at:[email protected]

D Send a fax or speak to a person at theGlobalCustomer Care (GCC)contact numbers.


ACS--5059REV 7 Sep 2010 2-1

TCAS II Operation


2. TCAS II Operation

INTRODUCTION

The TCAS II systemmonitors the airspace surrounding your aircraft byinterrogating the transponder of intruding aircraft. The interrogationreply enables TCAS II to compute the following information about theintruder:

D Range between your aircraft and the intruder

D Relative bearing to the intruder

D Altitude and vertical speed of the intruder, if reporting altitude

D Closing rate between the intruder and your aircraft.

Using this data TCAS II predicts the time to, and the separation at, theintruders closest point of approach (CPA). When TCAS II predicts thatcertain safe boundariesmay be violated, it issues a traffic advisory (TA)to alert the crew that closing traffic is in the vicinity.

If the intruder continues to close, TCAS II issues a resolution advisory(RA) to obtain ormaintain safe vertical separation between your aircraftand the intruder. TCAS II bases the alarms on a five--second crewreaction time to begin the separationmaneuver. Increase or reversal ofan RA requires a reaction in two and one--half seconds.


ACS--5059REV 7 Sep 2010

TCAS II Operation2-2


TYPICAL TCAS II ENCOUNTER

Two TCAS II equipped aircraft, as shown in Figure 2--1, coordinate theresolution advisories using a Mode S transponder air--to--air datalink.The coordination ensures that complementary advisories are issued ineach aircraft. The crewmust promptly but smoothly follow the advisory.Since maneuvers are coordinated, the crew must never maneuver inthe opposite direction of the advisory.

TCAS II can track as many as 45 aircraft, display up to 30 of them andcan coordinate a resolution advisory for up to three intruders at once.The advisories are always based on the least amount of deviation fromthe flight path while providing safe vertical separation.

Figure 2--1Traffic Encounter


ACS--5059REV 7 Sep 2010 2-3

TCAS II Operation


TRAFFIC DISPLAY SYMBOLS

TCAS II displays four different traffic symbols on the traffic advisorydisplays. The symbols change shape and color to represent increasinglevels of urgency.

The traffic symbols can also have an associated altitude tag that showsrelative altitude in hundreds of feet, indicating whether the intruder isclimbing, flying level, or descending. A plus (+) sign and number abovethe symbol means the intruder is above your altitude. A minus (--) signand number beneath indicates it is below your altitude. A trend arrowis displayed when the intruder’s vertical rate is 500 feet per minute orgreater.

If the intruder is non--altitude reporting (NAR), the traffic symbol isshown without an altitude number or trend arrow. The type of symbolselected by TCAS II is based on the intruder location and closing rate.

If TCASdirection finding techniques fail to locate theazimuth of anotheraircraft during a TA or an RA, a NOBEARINGmessage is displayed onthe screen.

Non--Threat Traffic

An open white diamond indicates that an intruder’s relative altitude isgreater than plus or minus 1,200 feet vertically or its distance is beyond6 NM (nautical miles) range. It is not yet considered a threat.

Figure 2--2 shows traffic that is 1,700 feet below your altitude, climbingat 500 feet per minute or greater.

Figure 2--2Non--threat Traffic


ACS--5059REV 7 Sep 2010



Proximity Intruder Traffic

A filled white diamond indicates that the intruding aircraft is within plusor minus 1,200 feet vertically and within 6 NM range, but is still notconsidered a threat.

Figure 2--3 shows traffic 1,000 feet below your aircraft and climbing.

Figure 2--3Proximity Intruder Traffic


ACS--5059REV 7 Sep 2010 2-5

TCAS II Operation


Traffic Advisory (TA)

A symbol change to a filled yellow circle indicates that the intrudingaircraft is considered to be potentially hazardous. Depending on youraltitude, TCAS II displays a TAwhen the time to CPA is between 20 and48 seconds.

Figure 2--4 shows intruder traffic 900 feet below your aircraft climbingat 500 feet per minute or greater. A voice announcement is heard in thecockpit advising, “Traffic, Traffic”.

Figure 2--4Traffic Advisory

Under normal conditions, a TA precedes an RA by 10 to 15 seconds.The crew must attempt to gain visual contact with the intruder and beprepared to maneuver when an RA is sounded 10 to 15 seconds later.

NOTE: Pilots must not maneuver their aircraft in response to trafficadvisories (TA) only.

Resolution Advisory (RA)

As shown in Figure 2--5, a solid red square indicates that the intrudingaircraft is projected to be a collision threat. The TCAS II systemcalculates that the intruder has reached the point where a resolutionadvisory is necessary. The time to closest point of approach with theintruder is now between 15 and 35 seconds depending on your altitude.The symbol is displayed together with a correct audio warning and avertical maneuver indicator on the RA/VSI. Voice announcements arelisted later in this section.

This aircraft is now 600 feet below your altitude and still climbing. Asynthesized voice announces a vertical maneuver command, such as,“Climb, Climb”.


ACS--5059REV 7 Sep 2010



The pilot must promptly and smoothly initiate any required verticalmaneuver within five seconds of the time the RA is posted using pitchcues or the vertical speed indicator as appropriate.

Figure 2--5Resolution Advisory

An intruder must be reporting altitude in order to generate an RA.Therefore, the RA symbol will always have an altitude tag.


ACS--5059REV 7 Sep 2010 2-7

TCAS II Operation


OFF SCALE TRAFFIC

The presence of TA or RA aircraft that are beyond the selected displayrange, as shown in Figure 2--6, is indicated by one--half of the trafficsymbol at the edge of the screen. The position of the half--symbolrepresents the bearing of the intruder. The same traffic on a 10--milerange weather mode format is shown in Figure 2--7.

Figure 2--6Off Scale Traffic

Figure 2--7Same Traffic on 10--Mile Range Weather Mode Format


ACS--5059REV 7 Sep 2010



RA/VSI INSTRUMENT

TCAS II guidance is incorporated into the vertical speed indicator. Tworows of colored lights, one green and one red, are located around thevertical speed scale. TCAS II uses the lights to indicate whether toclimb, descend, or remain level. The lights are OFF unless an activeresolution advisory is in progress.

Resolution advisories are grouped as corrective advisories orpreventive advisories. Corrective advisories require apositive action bythe crew accompanied by a green arc on the RA/VSI showing Fly Toguidance. Preventive advisories require that NOaction be taken to alterthe flight path of the aircraft.

When TCAS issues anRA, certain segments in the row of red lights areturned on. Segments in the row of green lights are on when the pilot isrequired to actively maneuver the aircraft to satisfy the resolutionadvisory. For safe separation from the intruder, the pilot mustmaneuverthe aircraft within the vertical speeds represented by the green lights.Vertical speeds within the red area must be avoided.

AnRAmay be presented on the VSI requiring avoidance of two ormorethreat aircraft simultaneously. For example, a do not descendindication may be visible at the same time a limit climb rate indicatoris displayed due to the threat of aircraft above and below your aircraft.

TA/VSI INSTRUMENT

The TA/VSI combines theplan position of intrudingaircraft andTCAS IIguidance on the vertical speed instrument.

A pointer and circular vertical speed scale indicate aircraft vertical rate.Resolution advisories are shown as red and green bands outside of thescale. The center of the display presents intruding traffic. Refer toSection 3, Controls and Displays, for a detailed description of theTA/VSI.


ACS--5059REV 7 Sep 2010 2-9

TCAS II Operation


HOW TO FLY TYPICAL TCAS II COMMANDS(CHANGE 7.1)

The resolution advisory is incorporated into the vertical speed indicator.By lighting green and red light bands around the dial, Fly--To andFly--Away--From commands are displayed coinciding with the verticalrate required to comply with the resolution advisory. Maneuver theaircraft promptly and smoothly in response to the resolution advisory.

WARNING

REMEMBER TO FLY TO THE GREEN, STAY OUT OF THE RED.

Some of the typical resolution advisories shown on the RA/VSI requirea maneuver by the crew while others warn against maneuvering. Atypical TCAS IImaneuver requires crew response to the initial RAwithinfive seconds and G--forces of ±.25 G. This force is similar to thatexperienced when initiating an en route climb or descent. Because ofthisG--force requirement, the response to theRA cannot be flownusingthe autopilot. The autopilot must be disconnected prior to respondingto theRA.When the initial RA is changed, the crewmust respondwithin2--1/2 seconds.

Some examples that illustrate typical TCAS II encounters showingintruder traffic on a display and the corresponding resolution on theRA/VSI are shown in Figures 2--8 through 2--25.

Indications and Voice Announcements

Traffic encounters that meet predetermined parameters trigger variousvisual and aural alerts in the TCAS II system. The following paragraphsdescribe the indications and voice announcements for Change 7.1.


ACS--5059REV 7 Sep 2010



“CLIMB, CLIMB”

Situation: The intruder is ahead at 12:00 o’clock, 200 feet below youraltitude, and flying level, as shown in Figure 2--8.

Figure 2--8TCAS Situation Display (Change 7.1)

Crew Response: Promptly and smoothly establish a climb rate of1,500 feet per minute. The VSI indication is shown in Figure 2--9.

Figure 2--9VSI Indication: Climb (Change 7.1)


ACS--5059REV 7 Sep 2010 2-11

TCAS II Operation


“LEVEL OFF, LEVEL OFF”

Situation:As shown in Figure 2--10, the previous intruder is nowbelowyour altitudewhile still at 12:00 o’clock and flying level after own aircrafthas accomplished CLIMB RA.


Crew Response: Promptly and smoothly level the aircraft. The VSIindications are shown in Figure 2--11.

Figure 2--11VSI Indication: Level Off (Change 7.1)


ACS--5059REV 7 Sep 2010



“MAINTAIN VERTICAL SPEED, MAINTAIN”

Situation: As shown in Figure 2--12, one intruder is ahead at12:00 o’clock and 500 feet above your altitude. Another intruder is at500 feet below your altitude. Both are flying level.


Crew Response: Remain in level flight. Do not climb or descend. TheVSI indications are shown in Figure 2--13.

Figure 2--13VSI Indication: Maintain Vertical Speed (Change 7.1)


ACS--5059REV 7 Sep 2010 2-13

TCAS II Operation


“MONITOR VERTICAL SPEED”

Situation: As shown in Figure 2--14, the intruder is ahead at12:00 o’clock, 500 feet below your altitude, and flying level.


Crew Response: Do not descend. Maintain level flight. The VSIindications are shown in Figure 2--15.

Figure 2--15VSI Indication: Monitor Vertical Speed (Change 7.1)


ACS--5059REV 7 Sep 2010



“TRAFFIC, TRAFFIC”

Situation: As shown in Figure 2--16, the intruder is ahead at12:00 o’clock, beyond five miles, and 200 feet below your altitude.


Crew Response: Do not maneuver on the Traffic Advisory symbol.Attempt to visually acquire the intruder and be prepared to maneuverif the TA changes to an RA. As shown in Figure 2--17, there are noTCAS related indications on the VSI display.

Figure 2--17No TCAS Indications (Change 7.1)


ACS--5059REV 7 Sep 2010 2-15

TCAS II Operation


“MAINTAIN VERTICAL SPEED, CROSSING MAINTAIN”

Situation: As shown in Figure 2--18, the intruder is ahead at12:00 o’clock, 400 feet above your altitude, and flying level. You arealready climbing at 2,000 feet per minute.


Crew Response: Maintain climb at present rate. The VSI indicationsare shown in Figure 2--19.

Figure 2--19VSI Indication: Maintain Vertical Speed (Change 7.1)


ACS--5059REV 7 Sep 2010



“DESCEND, DESCEND”

Situation: As shown in Figure 2--20, one intruder is ahead at12:00 o’clock, 200 feet above your altitude, and flying level.


Crew Response: Promptly and smoothly establish a descent rate of1,500 feet per minute. The VSI indications are shown in Figure 2--21.

Figure 2--21VSI Indication: Descend (Change 7.1)


ACS--5059REV 7 Sep 2010 2-17

TCAS II Operation


“CLIMB, CLIMB NOW. CLIMB, CLIMB NOW”

Situation: As shown in Figure 2--22, the intruder is ahead and aboveand has changed from level flight to a rapid descent after TCAS issueda descend RA. TCAS is now changing that to a climb.


Crew Response: The crew is expected to initiate the change from adescent to a climb maneuver within 2.5 seconds using an accelerationrate of up to .35 Gs. The VSI indications are shown in Figure 2--23.

Figure 2--23VSI Indication: Climb Now (Change 7.1)


ACS--5059REV 7 Sep 2010



“CLEAR OF CONFLICT”

Situation: As shown in Figure 2--24, the intruder has passed behindand is now 600 feet below your altitude. It is no longer a threat.


Crew Response: Return promptly to the previous ATC clearance. Asshown inFigure 2--25, there are no TCAS related indications on theVSIdisplay.

Figure 2--25No TCAS Indications (Change 7.1)


ACS--5059REV 7 Sep 2010 2-19

TCAS II Operation


Recovery After Clear of Conflict

If initially in level flight, return to the previously assigned altitude unlessotherwise directed by ATC.

If climbing or descending, resume the planned climb or descent afterthe intruder has passed by unless otherwise directed by ATC.

AUDIO ANNOUNCEMENTS (CHANGE 7.1)

Synthesized voice announcements are issued by TCAS II over theaircraft audio system. All of the resolution advisories, audiomessages,and advisories in the TCAS II vocabulary are listed in Tables 2--1through 2--3.

NOTE: Following a “CLEAR OF CONFLICT” advisory, the pilotmust expeditiously return to the applicable ATC clearanceunless otherwise directed and notify ATC.

Table 2--1Audio Messages (Change 7.1)

Condition Advisory Message

Traffic Advisory “Traffic, Traffic” (see NOTE)

RA Cleared “Clear of Conflict”

Self--test Passed “TCAS System Test OK”

Self--test Failed “TCAS System Test Fail”

NOTE: “Traffic” is spoken once if a second TA appears.

Table 2--2Resolution Advisories and Synthesized Voice

Announcements (Change 7.1)

Resolution Advisory Audio Message

Climb “Climb, Climb”

Descent “Descend, Descend”

Crossover Climb “Climb, Crossing Climb--Climb,Crossing Climb”


ACS--5059REV 7 Sep 2010



Table 2--2 (cont)Resolution Advisories and Synthesized Voice

Announcements (Change 7.1)


Crossover Descent “Descend, CrossingDescend--Descend, CrossingDescend”

Vertical Speed Restricted(Climbing or Descending)

“Level Off, Level Off”

Any Weakening or Softening ofan RA

“Level Off, Level Off”

Preventative ResolutionAdvisory

“Monitor Vertical Speed”

Maintain Existing Vertical Speed “Maintain Vertical Speed,Maintain”

Maintain Existing Vertical SpeedWhile Crossing Threat’s Altitude

“Maintain Vertical Speed,Crossing Maintain”

The resolution advisories listed in Table 2--3, are changes from thosepreviously issued and require two and one--half seconds response timeand up to .35 G.

Table 2--3Resolution Advisories (Change 7.1)


Change From Climb to Descent “Descend, Descend NOW --Descend, Descend NOW”

Change From Descent to Climb “Climb, Climb NOW -- Climb,Climb NOW”

Increase Climb Rate “Increase Climb, IncreaseClimb”

Increase Descent Rate “Increase Descent, IncreaseDescent”


ACS--5059REV 7 Sep 2010 3-1



3. Controls and Displays

INTRODUCTION

The CTA--81 Control Unit is the master control for both the TCASsystem and transponder.

TRANSPONDER/TCAS CONTROL UNIT (CTA--81A,CTA--81B, CTA--81C)

The diagrams shown in Figures 3--1 and 3--2 represent the CTA--81Adual Mode S/TCAS Control Unit and the CTA--81B ModeS/ATCRBS/TCAS Control Unit.

Figure 3--1CTA--81A Dual Mode S/TCAS Control Unit


ACS--5059REV 7 Sep 2010

Controls and Displays3-2


Figure 3--2CTA--81B Mode S/ATCRBS/TCAS Control Unit

CTA--81A, CTA--81B, CTA--81C CONTROLS ANDDISPLAYS

The CTA--81A controls two Mode S transponders. The CTA--81Bcontrols one Mode S transponder and one ATCRBS transponder. TheCTA--81C controls one Mode S transponder.

NOTE: Controls vary depending on CTA--81 ( ) configurationinstalled. Control functions same as typical unit shown.

The display window displays ATC codeselection and whether transponder No. 1 orNo. 2 is active. The R blinks indicatinginterrogation reply of ATCRBS transponderonly.

ATC 1--2 selects the active transponder. Theother unit is placed in standby.

ALTON/OFF turns altitude sourceONor OFF.

Concentric knobs select ATC code in codewindow.


ACS--5059REV 7 Sep 2010 3-3



The ATC FAIL Lamp indicates failure of theselected transponder.

ATC IDENT initiates IDENT feature for ATC.

ALT 1--2 (CTA--81A) or ALT SOURCE 1/OFF/2 (CTA--81B) selects one of two altitudesources Air Data Computer No. 1 or No. 2.OFF position disables altitude squawk.

The TCAS RANGE selector selects the trafficadvisory display range in nautical miles.

The FL button (center of TCAS range knob)replaces intruder’s relative altitude withabsolute altitude in flight level format for15 seconds. During this period your altitude,expressed as flight level, is displayed. After15 seconds flight level reverts back to relativealtitude.

The FL function is inhibited below 18,000 feet MSL (mean sea level)unless barometric corrected altitude is available from an air datacomputer. In this case, the FL function is available at any altitude.

If FL is selected while inhibited, FL------ replaces your flight level.

A/B (Above/Below) toggle switch selectsaltitude display limits. There are three levels tochoose from:

ABOVE (Climb phase)

D 9,000 feet above, 2,700 feet below


ACS--5059REV 7 Sep 2010



NORMAL (En route phase)

D 2,700 feet above, 2,700 feet below.

BELOW (Descent phase)


Function Selector CTA--81A/C Control Unit Only(Selects Operating Mode)

Moving the spring loaded knob toTESTposition for one second initiatesa comprehensive self--test lasting approximately twelve seconds.Referto the Test section in Appendix A for a detailed description of testfunctions. The Function Selector on the CTA--81 A/C Control Unit isshown in Figure 3--3.

Figure 3--3CTA--81 A/C Function Selector

The positions on the function selector are as follows:

D STBY places Mode S transponder and TCAS system in standby.

D ALTOFFactivates transponderwithout altitude reporting andTCASsystem in standby.

D ALT ON activates transponder with altitude reporting and TCASsystem in standby.

D TA (Traffic Advisory)modepresents traffic location onTAdisplaybutdoes not issue resolution advisories. TA mode annunciationappears on displays and activates transponder and altitudereporting.

D TA/RA (Traffic Advisory and Resolution Advisory) mode presentstraffic location on displays and issues audio and visual resolutionadvisories for traffic determined to be a threat. TA/RA modeannunciator appears on PPI or ITA--81A displays then activatestransponder and altitude reporting.


ACS--5059REV 7 Sep 2010 3-5



Function Selector CTA--81B Control Unit Only(Selects Operating Mode)

There are no TCAS functions on the ATC 2 (3 most clockwise)positions.

The left ATC 1 TEST, in the counterclockwise (CCW) position, tests theMode S transponder and the TCAS system. The right ATC 2 TEST, inthe clockwise (CW) position, tests the ATCRBS transponder. TheFunction Selector on theCTA--81BControl Unit is shown in Figure 3--4.

Figure 3--4CTA--81B Function Selector

Moving the spring loaded knob to either TEST position initiates aself--test in the respective unit. Refer to the Test section in Appendix Afor a detailed description of test functions. These positions are asfollows:

D Selection of either STBY position places both transponders andTCAS II system in standby.

D ATC 1 ON activates the Mode S transponder. TCAS in standby.

D ATC 2 ON activates the air traffic control radar beacon system(ATCRBS) transponder. TCAS in standby.

D TA (Traffic Advisory) mode. Presents traffic location on displays butdoes not issue resolution advisories. TA mode annunciationappears on displays. Mode S transponder activated with altitudereporting.

D TA/RA (Traffic Advisory and Resolution Advisory) mode. Presentstraffic location on displays and issues audio and visual ResolutionAdvisories for traffic determined to be a threat. TA/RA modeannunciation appears on PPI or ITA--81A displays. Mode Stransponder activated with altitude reporting.


ACS--5059REV 7 Sep 2010



TRANSPONDER/TCAS CONTROL UNIT (CTA--100A)

The rotary and keypadCTA--100AModeS/TCAS control unit diagramsare shown in Figures 3--5 and 3--6.

Figure 3--5CTA--100A Mode S/TCAS Control Unit (Rotary)

Figure 3--6CTA--100A Mode S/TCAS Control Unit (Keypad)


ACS--5059REV 7 Sep 2010 3-7



CTA--100A Controls and Displays

The CTA--100A Control Unit is the master control for both the TCASsystem and transponder. The CTA--100A has various configurationsthat can be used to control the following system configurations:

D Systems with two Mode S transponders

D Systems with one Mode S transponder.

The display window and FCN button are used to show and select thefollowing functions and are shown in Figure 3--7:

D ATC code selection

D Above/Normal/Below selection

D Flight Level selection

D Flight ID code selection

D Panel BIT command selection.

Pushing the FCN key permits the operator to scroll through theseselections. The display defaults to ATC code selection whenever theIDENT button is actuated. Panel built--in test (BIT) is available onlywhen the Mode Select control is set to STANDBY.

Figure 3--7Function Selections


ACS--5059REV 7 Sep 2010



The functions of each of the features are as follows:

IDENT button -- Initiates the identification feature designated for airtraffic control as follows:

Display -- Shows menu selections and modes

ATC FAIL Lamp -- Indicates failure of the selected transponder.

FCN button -- Selects display function modes

Left button (<) -- Moves cursor to the left

Right button (>) -- Moves cursor to the right

ENT button -- Confirms and enters display data to the system.

Mode select control -- Is used to select the operating mode of theMode S transponder and TCAS system.

D Moving the spring loaded knob to TEST position for one secondinitiates a comprehensive TCAS self--test lasting approximatelytwelve seconds.

D STBY places the Mode S transponder(s) and TCAS system onstandby.

D ALT OFF activates transponder without altitude reporting. TheTCAS system sets to standby.

D ALT ON activates transponder with altitude reporting. The TCASsystem sets to standby.

D TA (Traffic Advisory)modepresents traffic location on theTAdisplaybut does not issue resolution advisories. TA mode annunciationappears on PPI or ITA--81A displays. TA Mode also activatestransponder and altitude reporting.

D TA/RA (Traffic Advisory and Resolution Advisory) mode presentstraffic location on displays and issues audio and visual resolutionadvisories for potentially hazardous traffic. TA/RA modeannunciation appears on PPI or ITA--81A displays. TA/RA modealso activates transponder and altitude reporting.

ATC 1--2 lamp -- Lights the active transponder (No. 1 or No. 2)immediately above the ATC button.

RNG DN button (not available on all versions of the CTA--100A) --Selects the next lower nautical mile range value.


ACS--5059REV 7 Sep 2010 3-9



ATC 1--2 button -- Selects an active transponder, while the othertransponder is placed on standby.

RNG UP button (not available on all versions of the CTA--100A) --Selects the next higher nautical mile range value.

ALT 1--2 button -- Selects one of two altitude sources, Air DataComputer No. 1 or No.2.

ALT1--2 lamp -- Lights theactive altitude source immediately above theATL button, while the other altitude source is placed on standby.

Inner knob (rotary versions only) -- Selects values 0 through 9, Athrough Z for the current cursor position (for selecting ATC code andFlight ID).

Outer knob (rotary versions only) -- Moves the display’s cursorposition.

Alphanumeric keypad (Keypad versions only) -- Is used to select ATCcode and Flight ID.


ACS--5059REV 7 Sep 2010



WEATHER RADAR INDICATORS (RDR--4, RDR--1F,RDR--1E)

The diagram in Figure 3--8 shows an example of the RDR--4 (PPI--4B)weather radar indicator.

Figure 3--8RDR--4 (PPI--4B)

The diagram in Figure 3--9 shows an example of the RDR--1F (PPI--1T)weather radar indiator.

Figure 3--9RDR--1F (PPI--1T)


ACS--5059REV 7 Sep 2010 3-11



The diagram in Figure 3--10 shows an example of the RDR--1E(PPI--1U) weather radar indiator.

Figure 3--10RDR--1E (PPI--1U)

PPI--1T, PPI--1U, and PPI--4B Indicator Controls

The following paragraphs describe the PPI--1T, PPI--1U, and PPI--4Bindicator controls.

NOTE: Control arrangement varies depending on PPI radarconfiguration installed. TCAS control functions are the sameas typical unit shown.

TCAS cycles through display modes; WX/TCASPop--Up, WX/TCAS Overlay, and TCAS Only.

At power--up the screen initially displays the TCASOnlymode. Pushingthe TCAS button once changes the display to WX Only mode.

Pushing again changes the display toWX/TCASOverlay. (TCAS trafficis overlaid on weather.)

Pushing again changes the display back to the TCAS Only mode.

In WX/TCAS pop--up mode, the display shows the selected radarfunction. When a TA or RA occurs, the display automatically switchesto the TCASOnly mode. The range changes to the previously selectedTCAS range.

Pushing theTCASbuttononceafter aPop--Up event occurs returns thedisplay to previous weather. The display will once again be interruptedif another TA or RA Pop--Up penetrates the protected range of youraircraft. When the traffic is no longer a threat, the screen automaticallyreverts to displaying weather.


ACS--5059REV 7 Sep 2010



MSG -- The message button activates the ACARSmode. Duringaircraft communications addressingandreporting system (ACARS) display, a TCAS pop--up

event replaces the ACARS page with TCAS Only. When the traffic isno longer a threat, the screen automatically reverts back to displayingACARS.

Pushing theMSG button once during the event reverts the display backto the previous ACARS display page. The display will once again beinterrupted if another TA or RA event occurs.

This function selector turns on the weatherradar system and selects the operatingmode;TCAS selects a TCAS only display,WXR/TCAS selects weather with TCASoverlay display, and WXR selects a weatheronly display.

Pushing the FL button replaces intruders relativealtitude with flight level. During this period, your flightlevel is displayed. Pushing the buttonagain changes thedisplay back to relative altitude.

The FL function is inhibited below 18,000 ft MSL unless barometricaltimeter settings are available from the air data computer.

WARNING

THE RDR--1E/ED AND RDR--1F TRANSMITTERS CONTINUE TORADIATE IN THE 5 AND 10 MILE NO WXR RANGES IF ANACTIVE MODE IS SELECTED ON THE RADAR CONTROLPANEL (ANY MODE EXCEPT TEST). REFER TO THEAPPROPRIATE WEATHER RADAR OPERATING MANUAL FORCAUTIONS AND LIMITATIONS PRESCRIBED BY FAAADVISORY CIRCULAR 20--68B.

The range selector selects range to bedisplayed.In the position labeled NO WXR, the displayshows TCAS traffic only (no radar).


ACS--5059REV 7 Sep 2010 3-13



The A/B (Above/Below) button or toggle switchselects altitude display limits. Three levels tochoose from are:

ABOVE (Climb phase)






The function selector turns on the weather radarsystem and selects operating mode; either a TCASmode or a Weather mode. Descriptions of each arelisted in Table 3--1.

Table 3--1Weather and TCAS Modes From Function Selector

Weather Modes TCAS Mode

The Weather modes; WX,TURB and MAP, show thedisplay origin at the bottomcenter of the screen. Theweather and TCAS views areforward. The display showsradar functions with TCASoverlay depending on theselection by the TCAS AUTObutton.At power--up the screen initiallydisplays the WX/TCAS overlaymode. Mode annunciation is theTCAS operational mode.

In the TCAS position TCASONLY function is selected. NoWeather is displayed. Theairplane symbol appears in thelower 1/3 of the screendisplaying traffic ahead of andbehind your aircraft.At power--up the screen initiallydisplays all TCAS traffic only.Mode annunciation is the TCASoperational mode.


ACS--5059REV 7 Sep 2010



Selection of the TCAS AUTO button gives the functionsfor the weather and TCAS modes as listed in Table 3--2.

Table 3--2Weather and TCAS Modes From TCAS AUTO Button

Weather Modes TCAS Mode

Pushing the button changes themode to TCAS pop--up whichdisplays WX only until a TA orRA intruder appears.Annunciation changes to TAAUTO or TA/RA AUTO. WhenTA/RA traffic enters theprotected area all TCAS traffic isshown over weather. When theintruder is no longer a threat thescreen automatically revertsback to displaying weather only.Pushing the button once morechanges the display back toWX/TCAS overlay mode.

Pushing the button oncechanges to TCAS pop--upmode. TCAS AUTO isannunciated. In pop--up modethe screen clears and remainsblank until TA or RA trafficappears. Then all TCAS traffic isdisplayed.The screen automatically clearswhen the intruder is no longer athreat.Pushing the button once morechanges the display back tofull--time display of all traffic.


ACS--5059REV 7 Sep 2010 3-15



WEATHER MODES MESSAGE FORMAT

The weather modes window and message format is shown inFigure 3--11.

Figure 3--11Weather Modes Window

The weather modes alerts and descriptions of each are listed inTable 3--3.

Table 3--3Weather Modes

Alert Description

TCAS STBY TCAS system in standby

TEST TCAS system in TEST

TA/RA TA/RA Mode

TA/RA AUTO TA/RA Pop--up Mode

TA ONLY TA Only Mode

TA AUTO TA Only Pop--up Mode

TD FAIL Indicator Failure


ACS--5059REV 7 Sep 2010



Table 3--3 (cont)Weather Modes

Alert Description

NO TCAS TCAS not operational. Place function selectorto TCAS for a list of faults.

TCAS FAIL Failures include: TCAS processor top orbottom TCAS antenna. Place function selectorto TCAS for a list of faults.

TCAS MODE MESSAGE FORMAT

The TCAS Mode window with message format descriptions are shownin Figure 3--12.

Figure 3--12TCAS Mode Window


ACS--5059REV 7 Sep 2010 3-17



The TCAS Modes alerts and descriptions are listed in Table 3--4.

Table 3--4TCAS Modes

Alert Description

TCAS STBY TCAS system in standby

TEST TCAS system in TEST

TA/RA TA/RA Mode

TA/RA AUTO TA/RA Pop--up Mode

TA ONLY TA Only Mode

TA AUTO TA Only Pop--up Mode

TD FAIL Indicator Failure


ACS--5059REV 7 Sep 2010



FAULT MESSAGE FORMAT

An example of a fault message format is shown in Figure 3--13.

Figure 3--13Fault Message Format

The fault annunciators are listed in Table 3--5.

Table 3--5Fault Annunciators

Fault Annunciator Fault Annunciator

TCAS PROCESSOR

UPPER ANTENNA

LOWER ANTENNA

RADIO ALT #1

RADIO ALT #2

RADIO ALT #1 and #2

#1 XPNDR DATA BUS

#2 XPNDR DATA BUS

TRAFFIC DISPLAY

RA DISPLAY #1

RA DISPLAY #2

RA DISPLAY #1 and #2

SELECTED XPNDR

XPNDR TOP ANT

XPNDR LOWER ANT

XPNDR TCAS DATA

XPNDR CONTROL DATA

XPNDR ALT DATA #1 and #2

#1 XPNDR ALT DATA

#2 XPNDR ALT DATA

ATTITUDE

HEADING

NOTE: If a fault occurs while in the WX function (TCAS FAILannunciated), switch to the TCAS function for a list of faults.If already in the TCAS function, faults come up automatically.


ACS--5059REV 7 Sep 2010 3-19



ITA--81A DEDICATED TCAS TRAFFIC DISPLAY

An ITA--81A dedicated TCAS traffic display is shown in Figure 3--14.

Figure 3--14ITA--81A Dedicated TCAS Traffic Display

ITA--81A Dedicated TCAS Traffic Display Controls

The ITA--81A dedicated TCAS traffic display controls are as follows:

Push the range selectors to select range to bedisplayed.

TCAS/AUTO button: At power--up the screen initiallydisplays all TCAS traffic. Pushing the button alternatesbetween full--time and TCAS pop--up modes.

When in pop--up mode the screen clears and remains blank until TA orRA traffic appears, then all TCAS traffic is displayed. TCAS AUTO isannunciated. The screen automatically clears when the intruder is nolonger a threat. Pushing the TCAS/AUTO button when no TCAS trafficis displayed returns the display to the full--time mode.


ACS--5059REV 7 Sep 2010



Push the controls to select vertical display limits.

ABOVE (Climb phase)






Adjusts display brightness.


ACS--5059REV 7 Sep 2010 3-21



IVA--81B RA/VSI RESOLUTION ADVISORY/VERTICALSPEED INDICATOR

Two rows of colored lights, one red and one green, are located aroundthe vertical speed scale, as shown in Figure 3--15. The RA/VSIindicates whether to climb, descend, remain level or otherwise changethe vertical speed by lighting segments of these rows. The requiredvertical maneuver keeps thepointer out of the red, and/or into thegreenareas.

Figure 3--15IVA--81B RA/VSI


ACS--5059REV 7 Sep 2010



IVA--81A/IVA--81D TA/VSI TRAFFIC ADVISORY/VERTICAL SPEED INDICATOR

The TA/VSI combines the vertical speed instrument with theTA andRAdisplay functions, as shown in Figure 3--16. Red and green bandsaround the circumference of the screen give RA information. Trafficlocation is presented on the face of the display inside of the verticalspeed scale.

Figure 3--16IVA--81A/IVA--81D TA/VSI

Versions of the IVA--81A/IVA--81D that have a TA select button (TASEL), shown in Figure 3--17, on the bezel can be configured to operatein either the TRAFFIC SELECT mode or the SWITCHABLE mode.Descriptions of each mode of operation is explained further.


ACS--5059REV 7 Sep 2010 3-23



Figure 3--17IVA--81A/IVA--81D Controls

Configured for TA Select

When no TA or RA traffic is present, the IVA--81A/IVA--81D operates inthe Vertical Speed Indicator mode only, with no TCAS Traffic Displayoverlay. Pushing TASEL (select) has no effect when no TA or RA trafficis in the area. When a TA or RA intruder is detected, the unitautomatically changes to theTraffic Displaymodewith a Vertical SpeedIndicator overlay. With an intruder present, pushing TA Select revertsthe display back to VSI mode only. The unit automatically reverts backto the Vertical Speed Indicator mode when threat traffic is no longerpresent. The presence of a new TA or RA intruder initiates a repeat ofthis cycle of operation.

Configured for Switchable

The IVA--81A/IVA--81D operates in either the Traffic Display mode orthe Vertical Speed indicator mode, regardless of whether there is threattraffic present. The display formats are selected manually by pushingTA Select. When a TA or RA intruder is detected, and if the displayformat has not been previously manually selected, the unitautomatically changes to theTraffic Displaymodewith a Vertical SpeedIndicator overlay. Again, pushing TA Select alternates between the twoformats. Theunit will not automatically revert back to the Vertical Speedonly mode when threat traffic is no longer present. The presence of anew TA or RA intruder initiates a repeat of this cycle of operation if thedisplay format was Vertical Speed only format.


ACS--5059REV 7 Sep 2010



Display Message Locations

The display message locations are shown in Figure 3--18.

Figure 3--18Display Message Locations


ACS--5059REV 7 Sep 2010 3-25



TCAS MODE/FAILURE

Table 3--6 lists the TCAS mode/failure display formats.

Table 3--6TCAS Mode/Failure

Standard Optional

Mode/Failure Color Mode/Failure Color

TCAS STBY Blue NO TCAS Blue -- TCASsystem instandby

TA/RA Blank TA/RA Blank

TEST Yellow TEST Yellow

TA ONLY Blue TA ONLY Blue/Yellow --when active TA

TCAS Yellow NO TCAS Yellow -- TCASsystem failure


ACS--5059REV 7 Sep 2010



TYPICAL TA/VSI SCENARIOS

Examples of typical TA/VSI scenarios are shown in Figures 3--19through Figure 3--23.

Figure 3--19Climb Advisory

Figure 3--20Do Not Descend


ACS--5059REV 7 Sep 2010 3-27



Figure 3--21Traffic Advisory

Figure 3--22Do Not Descend


ACS--5059REV 7 Sep 2010



Figure 3--23Descend Advisory


ACS--5059REV 7 Sep 2010 4-1



4. System Considerations

INTRODUCTION

The following paragraphs discuss the warnings, limitations, andcautions in the TCAS II/ACAS II system.

WARNINGS AND LIMITATIONS

Warnings and limitations for Change 7.1 are described in this Section.Warnings and limitations for Change 7.0 are identical to Change 7.1.Warnings and limitations specific to Change 6.04a can be found inAppendix C of this guide. The capability of TCAS II is dependent uponthe type of transponder in the intruding aircraft as follows:

D The intruding aircraft must be equipped with a properly operatingtransponder for normal TCAS operation. TCAS is unable to detectany aircraft without an operating transponder.

D If the intruder is non--altitude reporting (NAR), TCAS displays onlythe range and bearing. It can issue a traffic advisory based ondistance and direction of flight but will not generate a resolutionadvisory. TCAS assumes NAR traffic is at the same altitude as youraircraft.

TCAS does not display NAR traffic when own aircraft is above14,500 feet.

A TCAS II resolution advisory is based on the expectation that the crewwill complywithin 5 seconds. Anymodification to the initial RA, includingan increase or reversal to an RA, requires two and one--half secondsreaction time.

The TCAS II processor is programmed with the specific aircraftoperating limitations, (i.e., maximum altitude at which the aircraft canclimb at 1,500 feet per minute). Climb or increase climb RAs aretherefore inhibited when the RAmaneuver cannot be completed safelydue to lack of aircraft performance capability. These performance limitsare included as part of the aircraft wiring. See the AFM (Airplane FlightManual) for the specific performance limitations for your aircraft.

Wiring options for TCAS also include the following:

D TCAS II can be wired to display all traffic full time or all traffic onlyas a result of the presence of a TA or an RA.


ACS--5059REV 7 Sep 2010

System Considerations4-2


D The TCAS display can have pilot--selectable range or can be a fixedrange controlled by the aircraft wiring.

D The TCAS II system can be automatically placed in standby whenthe aircraft is on the ground.

D The IVA--81A/IVA--81D can be wired to clear the displayautomatically after a TA or RA passes, or by pushing the TA SELbutton, if applicable.

D Themanually initiatedTCAS test procedure canbe inhibited in flight.However, this does not inhibit the transponder self--test and TCASwill be placed in STBY during transponder self--test forapproximately five seconds.

D The aircraft Master Lamp Test Switch can be wired to control theTA/VSI and RA/VSI sequential lamp test.

TCAS II does not display traffic on the ground.

In general, if the intruder is within 380 ±20 feet of the ground it is notdisplayed. When another aircraft lands, it can take approximately20 seconds for TCAS II to determine that it has done so.

When TCAS II is on the ground, it displays existing tracks down to150 feet of the ground. Again, it can take 20 seconds for the system todetermine that the aircraft has landed.

Refer to the Airplane Flight Manual for the specific operational featuresof a particular TCAS installation.

Increase descent resolution advisories are inhibited below 1,450 feetAGL while descending and 1,650 feet AGL while ascending.

All resolution advisories are inhibited below 900 feet descending or1,100 feet ascending.

All TCAS II audio warnings are inhibited below 400 feet radio altitudeon approach and up to 600 feet radio altitude on departure.

Maneuvers based solely on the TCAS traffic display are prohibited bythe Aircraft Flight Manual (AFM).

RAs should be followed without the autopilot or autothrottle systemengaged.

TCAS II tracking range can beseverely limited in high traffic areas. Thisis especially true of high traffic areas with a high density of TCASequippedaircraft suchas terminal areas andwhile on the ground.Whileon the ground, range may be reduced to below five miles. After takeoffrange will increase, but may still be limited to under 10 miles.


ACS--5059REV 7 Sep 2010 4-3



This tracking range limiting is required in order to comply with FAAregulations, to ensure that TCAS II will not interfere with ATC groundstation tracking. This should not be interpreted as a systemmalfunction.

The RDR--1E/ED and RDR--1F radar transmitters are controlled froma separate radar control panel. When 5-- or 10--mile NO WXR range isselected on the PPI--1U, the transmitter continues to radiate if an activemode (any mode except TEST) is selected on the radar control panel.Refer to the correct Weather Radar Operating Manual for cautions andlimitations as prescribed by FAA Advisory Circular 20--68B.


ACS--5059REV 7 Sep 2010



WARNINGS

REVISIONOF PANS--OPS, DOC 8168: “OPERATIONOF ACAS IIEQUIPMENT”:

1. PILOTS SHALL RESPOND IMMEDIATELY BY FOLLOWINGTHE RA AS INDICATED, UNLESS DOING SO WOULDJEOPARDIZE THE SAFETY OF THE AIRPLANE.

2. PILOTS SHALL FOLLOW THE RA EVEN IF THERE IS ACONFLICT BETWEEN THE RA AND AN ATC INSTRUCTIONTO MANEUVER.

3. PILOTS SHALL NOT MANEUVER IN THE OPPOSITE SENSEOF AN RA.

NOTE: VISUALLY ACQUIRED TRAFFIC MAY NOT BE THESAME TRAFFIC CAUSING AN RA. VISUALPERCEPTION OF AN ENCOUNTER MAY BEMISLEADING, PARTICULARLY AT NIGHT.

4. PILOTS SHALL, AS SOON AS PERMITTED BY FLIGHTCREW WORKLOAD, NOTIFY THE APPROPRIATE ATC UNITOF THE RA, INCLUDING THE DIRECTION OF ANYDEVIATION FROM THE CURRENT ATC INSTRUCTION ORCLEARANCE.

CAUTIONS

Do not over react to a resolution advisory. Fly only the vertical speedcommanded. Using higher vertical speeds than that shown on theRA/VSI is NOT better. Be alert and comply with modified or weakeningRAs annunciated by “Level Off, Level Off” to minimize displacementfrom ATC clearance.

The TCAS installation is required to be wired to giveGPWS/EGPWS/TAWS and windshear higher priority than TCAS. Incase of simultaneous audio alarms, the TCAS II system is placed in TAONLY mode (aural annunciations are inhibited) and the TA/VSI andRA/VSI flag shows RA OFF.

NOTES

WhenTCAScommands a corrective resolution advisory, sufficient timeexists to perform a smooth vertical maneuver to avoid the conflict.TCAS II expects five--second crew reaction time to initial RAs, requiringapproximately .25 G. A change to the initial RA, including an increaseor reversal, requires two and one--half seconds reaction time and up to.35 G.


ACS--5059REV 7 Sep 2010 4-5



It is possible to see an aircraft flying the same course and direction asyour aircraft and be in close proximity to your aircraft, yet TCAS II maynot consider it a threat. TCAS II calculates the closure rate of theintruder, and derives the time to the closest point of approach (CPA).If there is no closure rate, no advisory will be issued, unless the intruderis very close (within approximately 1/4 mile).

Conversely, traffic at the same altitude very far ahead may be shownas an RA by TCAS because of a very rapid closure rate.


ACS--5059REV 7 Sep 2010



Blank Page


ACS--5059REV 7 Sep 2010 A--1

Tests


Appendix A

Tests

INTRODUCTION

The Mode S transponder and TCAS Functional Test determines theoperational status of the entire system.

FUNCTIONAL AND AUTOMATIC SELF--TEST

The Mode S transponder and TCAS functional test determines theoperational status of the entire system. The test is initiated by rotatingthe function selector knob on the transponder control panel to thecounterclockwise TEST position for one second. Thereafter, the testcontinues automatically for a period of approximately 12 seconds.During the test, theTCAS II and transponder function is inhibited.Whenthe knob is held for longer than 12 seconds, the system remains in testuntil it is released.

If the weather radar indicator is OFF, warm--up time for the weatherradar indicators is about five seconds.

During the first few seconds of the test sequence, the control panel, theITA--81A Dedicated Traffic Display, the radar indicators, the TA/VSI,and the RA/VSI execute a display test.

A test pattern displaying on the dedicated display, the radar PPI and theTA/VSI permit verification of each type of intruder symbol. The testgenerates the symbols arranged as shown. The traffic advisory displayannunciates the word TEST. If the weather radar is in the TESTfunction, this pattern is displayed over the PPI test pattern. If in aweather function, this test is displayed over weather.

Use of the self--test function in flight inhibits TCAS II and transponderoperation for up to 12 seconds. For this reason, the pilot must usecaution when initiating the test in flight.


ACS--5059REV 7 Sep 2010

TestsA--2


NOTES: 1. Some installations can inhibit the activation of TCASself--test in flight. However, TCAS will be placed inSTBY while the transponder is in self--test forapproximately five seconds.

2. During the TCAS self--test operation aircraft pressurealtitude, aircraft Mode--S address and aircraftmaximum airspeed capability are not monitored.However, these transponder inputs are alwaysmonitored and faults reportedwhile the TCAS is in oneof its active modes, TA Only or TA/RA. Altitude inputto the selected transponder is monitored by thetransponder but will not display a fault message whenselecting transponder modes.

TCAS display test pattern, TCAS function at 5 NM rangewith dedicateddisplay and PPI, is shown in Figure A--1.

Figure A--1TCAS Display Test Pattern


ACS--5059REV 7 Sep 2010 A--3

Tests


A TA/VSI test pattern at 5 NM range, is shown in Figure A--2.

Figure A--2TA/VSI Test Pattern

A resolution advisory (red square) is displayed at 3 o’clock, range of2 miles, 1,000 feet below and flying level.

A traffic advisory (yellow circle) is displayed at 9 o’clock, range of2 miles, 200 feet below and climbing.

Proximity traffic (solid white diamond) is displayed at 1 o’clock, rangeof 3.6 miles, 200 feet above and descending.

Non--Threat traffic (open white diamond) is displayed at 11 o’clock,range of 3.6 miles, 1,000 feet above and flying level.


ACS--5059REV 7 Sep 2010

TestsA--4


RA/VSI FLAGS AND TEST INDICATORS

During the first few seconds of the TEST, the RA/VSI red and greencircumference lights (the climb/descend indicators) light sequentially.The TCAS flag is in view throughout the test period, as shown inFigure A--3.

Figure A--3Sequential Lamp Test


ACS--5059REV 7 Sep 2010 A--5

Tests


After the sequential lamp test, the red and green climb/descend lightsdisplay a fixed test command throughout the remainder of the systemtest, as shown in Figure A--4.

Figure A--4Fixed Test Command

At the conclusion of a successful self--test, a synthesized voiceannounces, TCAS System Test OK.

RA/VSI AND TA/VSI LAMP TESTS

The following paragraphs discuss the RA/VSI and TA/VSI lamp tests.

RA/VSI Lamp Test

If the aircraft wiring includes a lamp test function, theRA/VSI sequentiallamp test can be observed by activating the Master Lamp Test switch.The test continues as long as the switch is held in test position.


ACS--5059REV 7 Sep 2010

TestsA--6


TA/VSI Lamp Test

The TA/VSI lamp test produces an array of traffic in the pattern shownin Figures A--5 and A--6. The climb/descend color bands alternatebetween green and red, lasting for two seconds each. The bands areblank for a one--second interval in between.

Figure A--5Red Test Pattern


ACS--5059REV 7 Sep 2010 A--7

Tests


Figure A--6Green Test Pattern

NOTE: TheVSI function of theTA/VSI will not beobserved during thelamp test.


ACS--5059REV 7 Sep 2010

TestsA--8


FAILURE CONDITIONS

If a VSI failure is detected at any time, the VSI flag is displayed.

When a failure is detected during self--test, the audio message says,TCAS System Test Fail.

If the TA display is a PPI or dedicated display, the correct failuremessage is displayed. (See Fault Message Format in Section 3,Controls and Displays.)

Test Audio Inhibit

TCAS test audio is inhibited during a GPWS/EGPWS/TAWS test oralert. TCAS test audio is inhibited during a windshear test or alert.

CTA--81B Clockwise Test Position

The CTA--81B function selector is moved to the right hand test position(switch fully clockwise) to test the ATCRBS transponder. During thetest, segments of the transponder control unit display window and theATC fail lamp light.

POST FLIGHT REPORTS

If a failure of the TCAS systems has occurred, give Maintenance asmuch specific information about the problem as possible. Avoidphrases such as TCAS inop.

Give information in terms of fault lights lit, audio announcements, testpatterns discrepancies and screen annunciators that indicate whichunit was observed to have failed.


ACS--5059REV 7 Sep 2010 B--1

TCAS II Operation (Change 7.0)


Appendix B


INTRODUCTION

The following appendix describes the TCAS II operation forChange 7.0.

HOW TO FLY TYPICAL TCAS II COMMANDS(CHANGE 7.0)

The resolution advisory is incorporated into the vertical speed indicator.By lighting green and red light bands around the dial, Fly--To andFly--Away--From commands are displayed coinciding with the verticalrate required to comply with the resolution advisory. Pilots are requiredto maneuver the aircraft promptly and smoothly in response to theresolution advisory.

Some of the typical resolution advisories shown on the RA/VSI requirea maneuver by the crew while others warn against maneuvering. Atypical TCAS IImaneuver requires crew response to the initial RAwithinfive seconds and G--forces of ±.25 G. This force is similar to thatexperienced when initiating an en route climb or descent.

NOTE: Because of this G--force requirement, the response to theRAcannot be flown using the autopilot. The autopilot must bedisconnected prior to responding to the RA. When the initialRA is changed, the crewmust respondwithin 2--1/2 seconds.

Some examples that illustrate typical TCAS II encounters showingintruder traffic on a display and the corresponding resolution on theRA/VSI are shown in Figures B--1 through B--18.

Indications and Voice Announcements

Traffic encounters that meet predetermined parameters trigger variousvisual and aural alerts in the TCAS II system. The following paragraphsdescribe the indications and voice announcements for Change 7.0.


ACS--5059REV 7 Sep 2010

TCAS II Operation (Change 7.0)B--2


“CLIMB, CLIMB”

Situation: The intruder is ahead at 12:00 o’clock, 200 feet below youraltitude, and flying level, as shown in Figure B--1.

Figure B--1TCAS Situation Display (Change 7.0)

Crew Response: Promptly and smoothly establish a climb rate of1,500 feet per minute. The VSI indications are shown in Figure B--2.

Figure B--2VSI Display: Climb Advisory (Change 7.0)


ACS--5059REV 7 Sep 2010 B--3



“ADJUST VERTICAL SPEED, ADJUST”

Situation: As shown in Figure B--3, the previous intruder is now belowyour altitudewhile still at 12:00 o’clock and flying level after own aircrafthas accomplished CLIMB RA.


Crew Response: Promptly and smoothly level the aircraft. The VSIdisplay is shown in Figure B--4.

Figure B--4VSI Display: Adjust Vertical Speed (Change 7.0)


ACS--5059REV 7 Sep 2010



“MAINTAIN VERTICAL SPEED, MAINTAIN”

Situation: As shown in Figure B--5, one intruder is ahead at12:00 o’clock and 500 feet above your altitude. Another intruder is at500 feet below your altitude. Both are flying level.


Crew Response: Remain in level flight. Do not climb or descend. TheVSI indications are shown in Figure B--6.

Figure B--6VSI Display: Maintain Vertical Speed (Change 7.0)


ACS--5059REV 7 Sep 2010 B--5




Situation: As shown in Figure B--7, the intruder is ahead at12:00 o’clock, 500 feet below your altitude, and flying level.


Crew Response: Do not descend. Maintain level flight. The VSIindications are shown in Figure B--8.

Figure B--8VSI Display: Monitor Vertical Speed (Change 7.0)


ACS--5059REV 7 Sep 2010




Situation: As shown in Figure B--9, the intruder is ahead at12:00 o’clock, beyond 5 miles, and 200 feet below your altitude.


Crew Response: Do not maneuver on the traffic advisory symbol.Attempt to visually acquire the intruder and be prepared to maneuverif the TA changes to an RA. As shown in Figure B--10, there are noTCAS indications displayed on the VSI.

Figure B--10No TCAS Indications (Change 7.0)


ACS--5059REV 7 Sep 2010 B--7



“MAINTAIN VERTICAL SPEED, CROSSING MAINTAIN”

Situation: As shown in Figure B--11, the intruder is ahead at12:00 o’clock, 400 feet above your altitude, and flying level. You arealready climbing at 2,000 feet per minute.


Crew Response:Maintain climb at present rate. The VSI indication isshown in Figure B--12.

Figure B--12VSI Display: Maintain Vertical Speed (Change 7.0)


ACS--5059REV 7 Sep 2010



“DESCEND, DESCEND”

Situation: As shown in Figure B--13, one intruder is ahead at12:00 o’clock, 200 feet above your altitude, and flying level.


Crew Response: Promptly and smoothly establish a descent rate of1,500 feet per minute. The VSI indication is shown in Figure B--14.

Figure B--14VSI Indication: Descend (Change 7.0)


ACS--5059REV 7 Sep 2010 B--9



“CLIMB, CLIMB NOW, CLIMB, CLIMB NOW”

Situation: As shown in Figure B--15, the intruder is ahead and aboveand has changed from level flight to a rapid descent after TCAS issueda descend RA. TCAS is now changing that to a climb.


Crew Response: The crew is expected to initiate the change from adescent to a climb maneuver within 2.5 seconds using an accelerationrate of up to .35 Gs. The VSI indication for this situation is shown inFigure B--16.

Figure B--16VSI Indication: Climb Now (Change 7.0)


ACS--5059REV 7 Sep 2010




Situation:As show inFigure B--17, the intruder has passedbehindandis now 600 feet below your altitude. It is no longer a threat.


Crew Response: Return promptly to the previous ATC clearance. Asshown in Figure B--18, there are no TCAS--related indications on theVSI display.

Figure B--18No TCAS Indications (Change 7.0)


ACS--5059REV 7 Sep 2010 B--11



Recovery After Clear of Conflict

If initially in level flight, return to the previously assigned altitude unlessotherwise directed by ATC.

If climbing or descending, resume the planned climb or descent afterthe intruder has passed by unless otherwise directed by ATC.

AUDIO ANNOUNCEMENTS (CHANGE 7.0)

Synthesized voice announcements are issued by TCAS II over theaircraft audio system. All of the resolution advisories, audiomessages,and advisories in the TCAS II vocabulary are listed in Tables B--1through B--3.

Table B--1Audio Messages (Change 7.0)




“Clear of Conflict” “TCAS System Test OK”

Self--test Failed Self--test Failed



ACS--5059REV 7 Sep 2010



Table B--2Resolution Advisories and Synthesized Voice Announcements

(Change 7.0)


Climb “Climb, Climb”

Descent “Descend, Descend”

Crossover Climb “Climb, Crossing Climb--Climb,Crossing Climb”

Crossover Descent “Descend, CrossingDescend--Descend, CrossingDescend”

Vertical Speed Restricted(Climbing or Descending)

“Adjust Vertical Speed, Adjust”

Any Weakening or Softening ofan RA

“Adjust Vertical Speed, Adjust”

Preventative ResolutionAdvisory

“Monitor Vertical Speed”

Maintain Existing Vertical Speed “Maintain Vertical Speed,Maintain”

Maintain Existing Vertical SpeedWhile Crossing Threat’s Altitude

“Maintain Vertical Speed,Crossing Maintain”


ACS--5059REV 7 Sep 2010 B--13



The resolution advisories listed in Table B--3, are changes from thosepreviously issued and require two and one--half seconds response timeand up to .35 G.

Table B--3Resolution Advisories (Change 7.0)


Change From Climb to Descent “Descend, Descend NOW --Descend, Descend NOW”

Change From Descent to Climb “Climb, Climb NOW -- Climb,Climb NOW”

Increase Climb Rate “Increase Climb, IncreaseClimb”

Increase Descent Rate “Increase Descent, IncreaseDescent”

CONTROLS AND DISPLAYS (CHANGE 7.0)

The controls and displays for Change 7.0 are identical to Change 7.1.Please refer to Section 3, Controls and Displays of this guide for moreinformation.


The warnings and limitations for Change 7.0 are identical toChange 7.1. Please refer to Section 4, Systems Considerations of thisguide for more information.

CAUTIONS

Do not over react to a resolution advisory. Fly only the vertical speedcommanded. Using higher vertical speeds than that shown on theRA/VSI is NOT better. Be alert and comply with modified or weakeningRAs annunciated by “Adjust Vertical Speed, Adjust” to minimizedisplacement from ATC clearance.

The TCAS installation is required to be wired to giveGPWS/EGPWS/TAWS and windshear higher priority than TCAS. Incase of simultaneous audio alarms, the TCAS II system is placed in TAONLY mode (aural annunciations are inhibited) and the TA/VSI andRA/VSI flag shows RA OFF.


ACS--5059REV 7 Sep 2010



Blank Page


ACS--5059REV 7 Sep 2010 C--1

TCAS II Operation (Change 6.04a)


Appendix C


INTRODUCTION

TCAS aurals for Change 6.04a are similar to Change 7.0 with thefollowing exceptions: “Climb” and “Descend” are repeated threetimes and Monitor Vertical Speed is repeated two times, as shownbelow:

D “Climb, Climb, Climb”

D “Descend, Descend, Descend”

D “Monitor Vertical Speed -- Monitor Vertical Speed”.


ACS--5059REV 7 Sep 2010

TCAS II Operation (Change 6.04a)C--2


HOW TO FLY TYPICAL TCAS II COMMANDS(CHANGE 6.04A)

The resolution advisory is incorporated into the vertical speed indicator.By lighting red and green light bands around the dial, Fly--To andFly--Away--From commands are displayed coinciding with the requiredvertical rate. Maneuver the aircraft promptly and smoothly inresponse to the resolution advisory.

Some of the typical resolution advisories shown on the RA/VSI requirea maneuver by the crew while others warn against maneuvering. Atypical TCAS II maneuver requires crew response within five secondsand G--forces of ±.25 G. This force is similar to that experienced wheninitiating an en route climb or descent. Because of this G--forcerequirement, the response to the RA cannot be flown using theautopilot. The autopilot must be disconnected prior toresponding to the RA.

The following diagrams illustrate typical TCAS II encounters showingintruder traffic on a display and the corresponding resolution on theRA/VSI.

Indications and Voice Announcements (Change6.04a)

Traffic encounters that meet predetermined parameters trigger variousvisual and aural alerts in the TCAS II system. The following paragraphsdescribe the indications and voice announcements for Change 6.04a.


ACS--5059REV 7 Sep 2010 C--3



“CLIMB, CLIMB, CLIMB”

Situation: As shown in Figure C--1, the intruder is ahead at12:00 o’clock and 200 feet below your altitude.

Figure C--1TCAS Situation Display (Change 6.04a)

Crew Response: Promptly and smoothly establish a climb rate of1,500 feet per minute. The VSI indications are shown in Figure C--2.

Figure C--2VSI Indication: Climb (Change 6.04a)


ACS--5059REV 7 Sep 2010



“MONITOR VERTICAL SPEED, MONITOR VERTICAL SPEED”

Situation: As shown in Figure C--3, the intruder is ahead at12:00 o’clock and 500 feet above your altitude. Another intruder is500 feet below your altitude.


Crew Response: Remain in level flight. Do not climb or descend. TheVSI indications are shown in Figure C--4.

Figure C--4VSI Indication: Monitor Vertical Speed (Do Not Climb or

Descend) (Change 6.04a)


ACS--5059REV 7 Sep 2010 C--5




Situation: As shown in Figure C--5, the intruder is ahead at12:00 o’clock, 500 feet below your altitude, and flying level.


Crew Response: Do not descend. The VSI indications are shown inFigure C--6.

Figure C--6VSI Indication: Monitor Vertical Speed (Do Not Descend)

(Change 6.04a)


ACS--5059REV 7 Sep 2010




Situation: As shown in Figure C--7, the intruder is ahead at12:00 o’clock, beyond 5 miles, and 200 feet below your altitude.


Crew Response: Do not maneuver on the traffic advisory symbol.Attempt to visually acquire the intruder and be prepared to maneuverif the TA changes to an RA. As shown in Figure C--8, there are noTCAS--related indications on the VSI display.

Figure C--8No TCAS Indications (Change 6.04a)


ACS--5059REV 7 Sep 2010 C--7




Situation: As shown in Figure C--9, the intruder is ahead at12:00 o’clock and 400 feet above your altitude. You are alreadyclimbing at 2,000 feet per minute.


Crew Response: Maintain climb at present rate. The VSI indicationsare shown in Figure C--10.

Figure C--10VSI Indication: Monitor Vertical Speed (Maintain Climb Rate)

(Change 6.04a)


ACS--5059REV 7 Sep 2010



“DESCEND, DESCEND, DESCEND”

Situation: As shown in Figure C--11, the intruder is ahead at12:00 o’clock and 200 feet above your altitude.


Crew Response: Promptly and smoothly establish a descent rate of1,500 feet per minute. The VSI indications are shown in Figure C--12.

Figure C--12VSI Indication: Descend (Change 6.04a)


ACS--5059REV 7 Sep 2010 C--9



“CLIMB, CLIMB NOW. CLIMB, CLIMB NOW”

Situation: As shown in Figure C--13, the intruder is ahead and aboveand has changed from level flight to a rapid descent after TCAS issueda descend RA. TCAS is now changing that to a climb.


Crew Response: Initiate the change from a descent to a climbmaneuver within 2.5 seconds with an increase in G--force of up to.35 Gs. The VSI indications are shown in Figure C--14.

Figure C--14VSI Indication: Climb Now (Change 6.04a)


ACS--5059REV 7 Sep 2010




Situation: As shown in Figure C--15, the intruder has passed behindand is now 600 feet below your altitude and is no longer a threat.


Crew Response: Return promptly to the previous ATC clearance. Asshown in Figure C--16, there are no TCAS--related indications on theVSI display.

Figure C--16No TCAS Indications (Change 6.04a)


ACS--5059REV 7 Sep 2010 C--11



AUDIO ANNOUNCEMENTS (CHANGE 6.04A)

Synthesized voice announcements are issued by TCAS II over theaircraft audio system. All of the resolution advisories, audiomessages,and advisories in the TCAS II vocabulary are listed in Tables C--1through C--3.

Table C--1Audio Messages (Change 6.04a)




Self--test Passed “TCAS System Test OK”

Self--test Failed “TCAS System Test Fail”



ACS--5059REV 7 Sep 2010



Table C--2Resolution Advisories and Synthesized Voice Announcements

(Change 6.04a)

RA Category Corrective

Climb “Climb, Climb, Climb”

Descent “Descend, Descend, Descend”

Crossover Climb “Climb, Crossing Climb, ClimbCrossing Climb”

Crossover Descent “Descend, Crossing Descend,Descend, Crossing Descend”

Preventive ResolutionAdvisory

“Monitor Vertical Speed, MonitorVertical Speed”

Vertical Speed Restricted(Climbing)

“Reduce Climb, Reduce Climb”

Vertical Speed Restricted(Descending)

“Reduce Descent, Reduce Descent”

NOTE: “Monitor Vertical Speed” is spoken once if downgraded from a previouscorrective advisory.


ACS--5059REV 7 Sep 2010 C--13



The resolution advisories listed in Table C--3, are changes from thosepreviously issued and require two and one--half seconds response timeand up to .35 G.

Table C--3Resolution Advisories (Change 6.04a)

RA Category Corrective Preventive

Change From Climbto Descent

“Descend, DescendNOW -- Descend,Descend NOW”

(N/A)

Change FromDescent to Climb

“Climb, Climb NOW --Climb, Climb NOW”

(N/A)

Increase Climb Rate “Increase Climb,Increase Climb”

(N/A)

Increase DescentRate

“Increase Descent,Increase Descent”

(N/A)

CONTROLS AND DISPLAYS (CHANGE 6.04A)

The following paragraphs describe the controls and displays forChange 6.04A.

Transponder/TCAS Control Unit -- CTA--81A,CTA--81B, CTA--81C

The A/B (Above/Below) toggle switch selectsaltitude display limits. There are three levels tochoose from:

ABOVE (Climb phase)

D 8,700 feet above

D 2,700 feet below


D 2,700 feet above

D 2,700 feet below


ACS--5059REV 7 Sep 2010




D 2,700 feet above

D 8,700 feet below.

WEATHER RADAR INDICATORS (RDR--4, RDR--1F,RDR--1E)

The following paragraphs describe the controls for weather radarindicators.

PPI--1T, PPI--1U, and PPI--4B Indicator Controls

The A/B (Above/Below) toggle switch selects altitudedisplay limits. There are three levels to choose from:

ABOVE (Climb phase)

D 8,700 feet above

D 2,700 feet below


D 2,700 feet above

D 2,700 feet below


D 2,700 feet above

D 8,700 feet below.


ACS--5059REV 7 Sep 2010 C--15



ITA--81A Dedicated TCAS Traffic Display Controls

The button controls select vertical display limits. Thereare three levels to choose from:

ABOVE (Climb phase)

D 8,700 feet above

D 2,700 feet below


D 2,700 feet above

D 2,700 feet below


D 2,700 feet above

D 8,700 feet below.


Warnings and limitations specific to Change 6.04a are identified in thefollowing paragraphs.

TCAS can be wired to inhibit display of traffic on the ground when youraircraft is below 1,700 ±50 feet AGL. If configured this way, aircraft onthe ground go away as descending through 1,650 feet and show on thetraffic display as climbing above 1,750 feet. TCAS II designates“On--Ground” traffic by comparing your aircraft radio altitude andpressure altitude. Any intruder estimated by TCAS to bewithin 380 feetof the ground descending or 400 feet ascending is categorized“On--Ground”. If not configured this way, all “On--Ground” intrudersare displayed as non--threat traffic (open white diamond).

Increase descent resolution advisories are inhibited below 1,450 feetAGL.

All TCAS II audio warnings are inhibited below 900 feet radio altitudeon approach and up to 1,100 feet radio altitude on departure.

CAUTIONS

The crew must not over react to a resolution advisory and fly only thevertical speed commanded. Using higher vertical speeds than thatshown on theRA/VSI isNOT better. The crewmust bealert and complywith modified or weakening RAs (annunciated by “Monitor VerticalSpeed”) to minimize displacement from ATC clearance.


ACS--5059REV 7 Sep 2010



Blank Page


ACS--5059REV 7 Sep 2010 Abbrev--1




Acronyms and abbreviations used in this guide are defined as follows:

TERMS DEFINITION

A/B above/belowA/C aircraftACARS aircraft comunications addressing and

reporting systemACAS airborne collision avoidance systemAFM Aircraft Flight ManualALT altitudeAOG aircraft on groundATC air traffic controlATCRBS air traffic control radar beacon systemAUTO automatic

BIT built--in testBITE built--in test equipment

CCW counterclockwiseCPA closest point of approachCRT cathode ray tubeCW clockwise

DN down

EGPWS enhanced ground proximity warning systemENT enter

FAA Federal Aviation AdministrationFCN functionFL flight levelft feet

G, Gs G--forcesGCC Global Customer CareGPWS ground proximity warning system

ID, IDENT identification


ACS--5059REV 7 Sep 2010

Acronyms and AbbreviationsAbbrev--2


TERMS DEFINITION

inHg inches of mercury

LRU line replaceable unit

mB millibarsMOPS Minimum Operational Performance StandardsMSG messageMSL mean sea level

NAR non--altitude reportingNM nautical mileNORM normal

PNL panel

RA resolution advisoryRad Alt radio altitudeRMA return material authorizationRNG rangeRTCA Radio Technical Commission for Aeronautics

SEL selectSPEX spares exchangeSTBY standby

TA traffic advisoryTAWS terrain awareness and warning systemTCAS traffic alert and collision avoidance systemTURB turbulence

VSI vertical speed indicator

WX, WXR weather

XPNDR transponder


ACS--5059REV 7 Sep 2010 Gloss--1

Glossary


GlossaryThe following is a list of technical and operational terms, acronyms, andabbreviations with explanations in alphabetical order.

AFM Airplane Flight Manual

AGL Above Ground Level

ATC Air Traffic Control -- A federally operated ground--based system that manages aircraft traffic flow.

ATCRBS ATC Radar Beacon System -- A ground--basedsecondary radar and airborne transponder systemused to monitor traffic.

Absolute Altitude above terrain. Also called Radio Altitude.Altitude Absolute altitude is received from a radio altimeter

and used by the TCAS processor to determinedistance to the surface.

Altitude Tag Data tag shown above or below threat symbol givingthe relative altitude of the intruder.

BITE Built--In Test Equipment. A feature of TCAS thatcontinually monitors itself for operational errors.

CPA Closest Point of Approach. Refers to predicted pointthat the intruder is closest to your aircraft.

Crossover The maneuver that TCAS has determined to beClimb, appropriate is a climb or descent through the altitudeCrossover of the threat aircraft. The crew is alerted to theDescent the crossover maneuver by an audio message.G--Force The ratio between a given load and the pull of gravity.

For TCAS purposes, G--forces of an RA could reach±.35 during an increase or reversal of the originalcommand.

Increase An increase maneuver is a change of the originalManeuver Resolution Advisory command, either climb or

descent, requiring a greater rate. The increasemaneuver could require G--forces to reachapproximately ±.35.

Indicated Altitude shown on the altimeter with barometricAltitude correction setting set to the local sea level pressure.

Used by the crew below 18,000 feet but not usedfor TCAS processing.

Intruder Any aircraft that is in the surveillance range of TCAS.

LRU Line Replaceable Unit -- A self--contained avionicscomponent that can be replaced in the field.


ACS--5059REV 7 Sep 2010

GlossaryGloss--2


Mode A ATCRBS transponder that replies to ATCTransponder interrogations sending identification code but without

giving altitude data.

Mode C ATCRBS transponder that replies to ATCTransponder interrogations giving identification code or encoded

altitude data.

Mode S Transponder that replies to ATC interrogationsTransponder giving an ATCRBS identification code, encoded

altitude and other data fields including aircraft discreteaddress.

MOPS Minimum Operational Performance Standards perRTCA document DO--185. TCAS II Change 6.04a isspecified by DO--185.TCAS II Change 7.0 is specifiedby DO--185A. TCAS II Change 7.1 is specified byDO--185B.

NAR Non--Altitude Reporting traffic.

Non--Threat An aircraft that has entered the TCAS surveillanceIntruder volume at a greater distance than 6 miles or altitude

greater than 1,200 feet above or below your aircraft.

Pressure Indicated altitude when barometric pressure is set toAltitude 29.92 inHg (1013.15 mB). Pressure altitude is used by

TCAS to determine the relative altitude of traffic.

Proximity An aircraft that is within 6 miles range and withinIntruder 1,200 feet above or below your aircraft but does not

meet the TCAS definition of a threat.

Rad Alt Radio Altitude -- Altitude received from a radioaltimeter and used by TCAS to determine distance tothe surface. See Absolute Altitude.

RA Resolution Advisory. An audio and visual indicationrecommending a vertical maneuver to achieve ormaintain separation from an intruding aircraft.

RA/VSI Resolution Advisory/Vertical Speed Indicator -- A flightinstrument that gives standard VSI indication plus RAclimb and descend requirements.

Relative The difference in altitude between two aircraft. TCASAltitude calculates relative altitude as the difference between

your aircraft’s pressure altitude and the encodedpressure altitude of the intruder.


ACS--5059REV 7 Sep 2010 Gloss--3

Glossary


Reversal A reversal maneuver is a change of the originalManeuver Resolution advisory command from a climb to a

descent or vice--versa. The reversal maneuver couldrequire G--forces to reach approximately ±.35.

Self--test A functional test that determines equipment status.Self--test differs from BITE performance monitoringbecause it is initiated by the crew and is not performedcontinually or automatically.

Surveillance The volume of airspace surrounding the aircraft thatVolume TCAS scans for intruding traffic. The TCAS system

scans approximately 40 NM in front of and 9,000 feetabove and below the aircraft. The volumeautomatically begins to decrease when flying into ahighdensity areaand canbe reduced to approximately15 NM in front of the aircraft.

TA Traffic Advisory -- An audio and visual indication thatanother aircraft is a potential threat. A TA can becomea resolution advisory within 15 seconds.

TA/VSI Traffic Advisory/Vertical Speed Indicator. A flightinstrument that gives standard VSI indication, planposition of local traffic, plus RA climb and descentrequirements.

Threat An aircraft that has satisfied TCAS threat detectionlogic and thus requiring a resolution advisory.


ACS--5059REV 7 Sep 2010

GlossaryGloss--4


Blank Page


ACS--5059REV 7 Sep 2010 Index--1

Index


IndexA

Abbreviations, Abbrev--1Acronyms, Abbrev--1Air traffic control (ATC) procedures,1-1

C

Cockpit displays, 1-1resolution advisory, 1-1traffic advisory, 1-1

Controls and displays, 3-1fault message format, 3-18

annunciators, 3-18function selector, 3-4

operating mode, 3-4, 3-5ITA--81A dedicated trafficdisplay, 3-19display controls, 3-19

IVA--81A/IVA--81D TA/VSI, 3-22display message locations,3-24

switchable, 3-23TA select, 3-23

IVA--81B RA/VSI, 3-21TCAS mode, 3-13

descriptions, 3-17message format, 3-16

TCAS mode/failure, 3-25transponder/TCAS CU, 3-1

CTA--100A, 3-6CTA--81A, 3-1CTA--81B, 3-1CTA--81C, 3-2

typical TA/VSI scenarios, 3-26weather modes, 3-13

descriptions, 3-15message format, 3-15

weather radar indicators, 3-10RDR--1E, 3-11RDR--1F, 3-10RDR--4, 3-10

Customer support, 1-5global customer care (GCC), 1-5Honeywell online technicalpublications web site, 1-6

F

Failure conditions, A--8

G

Global customer care (GCC), 1-5

H

Half--symbol traffic, 2-7Honeywell customer support, 1-5global customer care, 1-5

Honeywell Online TechnicalPublications Web site, 1-6

Honeywell product support, 1-5How to fly typical TCAS IIcommands, B--1, C--2Change 6.04a , C--2

audio announcements, C--11clear of conflict, C--10climb, climb now. climb, climbnow, C--9

climb, climb, climb, C--3descend, descend, descend,C--8

indications and voiceannouncements, C--2

monitor vertical speed, C--5,C--7

monitor vertical speed,monitor vertical speed,C--4

traffic, traffic, C--6Change 7.0, B--1

adjust vertical speed, adjust,B--3


ACS--5059REV 7 Sep 2010

IndexIndex--2


Index (cont)How to fly typical TCAS IIcommands (cont)Change 7.0 (cont)

clear of conflict, B--10climb, climb, B--2climb, climb now, climb, climbnow, B--9

descend, descend, B--8indications and voiceannouncements, B--1

maintain vertical speed,crossing maintain, B--7

maintain vertical speed,maintain, B--4

monitor vertical speed, B--5recovery after clear ofconflict, B--11

traffic, traffic, B--6Change 7.1, 2-9

clear of conflict, 2-18climb, climb, 2-10climb, climb now. climb, climbnow, 2-17

descend, descend, 2-16indications and voiceannouncements, 2-9

level off, level off, 2-11maintain vertical speed,crossing maintain, 2-15

maintain vertical speed,maintain, 2-12

monitor vertical speed, 2-13recovery after clear ofconflict, 2-19

traffic, traffic, 2-14

I

Introduction, customer support,global customer care (GCC), 1-5

N

Non--threatening traffic, 2-3

P

Post flight reports, A--8Proximity intruder traffic, 2-4

R

RA/VSI instrument, 2-8RA/VSI lamp test, A--5Resolution advisory (RA), 2-5Resolution advisory (Change6.04a), C--1cautions, C--15controls and displays, C--13

CTA--81A, C--13CTA--81B, C--13CTA--81C, C--13ITA--81A traffic display, C--15weather radar indicators,C--14

warnings and limitations, C--15weather radar indicators, C--14

PPI--1T, PPI--1U, PPI--4B,C--14

S

System considerations, 4-1cautions, 4-4notes, 4-5warnings and limitations, 4-1

T

TA/VSI instrument, 2-8TA/VSI lamp test, A--6TCAS II operationChange 7.0

voice announcements, B--11Change 7.1

voice announcements, 2-19


ACS--5059REV 7 Sep 2010 Index--3

Index


Index (cont)TCAS II operation (cont)half--symbol traffic, 2-7interrogation reply, 2-1non--threatening traffic, 2-3proximity intruder traffic, 2-4RA/VSI instrument, 2-8resolution advisory, 2-5TA/VSI instrument, 2-8traffic advisory, 2-5traffic symbols, 2-3typical encounter, 2-2

TCAS II overview, 1-1TCAS II processor, 1-1TCAS II system, 1-4TCAS mode/failure, 3-25Tests, A--1automatic self--test, A--1failure conditions, A--8

CTA--81B function selector,A--8

test audio, A--8flags and indicators, A--4functional, A--1post fight reports, A--8RA/VSI lamp test, A--5TA/VSI lamp test, A--6

Traffic advisory (TA), 2-5Traffic display symbols, 2-3Typical encounter, 2-2


ACS--5059REV 7 Sep 2010

IndexIndex--4


Blank Page

PG-ACS-5059_R07

Documents

revision bars

current revision

alreadyput revision

technical data

page t

changed data

highlightsthis guide

comwpsportalaerotcas