Manual 170, Revision 8 - hartzellprop.comhartzellprop.com/wp-content/uploads/170-0000-R08-O.pdf · pages 3-13 and 3-14 pages 3-13 and 3-14 ... , "Repair Regions - N-shank Blades With

MANUAL REVISION TRANSMITTALMANUAL 170 (61-13-70)

Composite Propeller Blade Field Maintenance and Minor Repair ManualREVISION 8 dated February 2018

Attached is a copy of Revision 8 to Hartzell Propeller Inc. Manual 170.Page Control Chart for Revision 8Remove Insert Chapter/Page No. Chapter/Page No.COVER COVER Cover and Inside Cover Cover and Inside Cover

REVISION HIGHLIGHTS REVISION HIGHLIGHTS pages 1 thru 4 pages 1 thru 4

LIST OF EFFECTIVE PAGES LIST OF EFFECTIVE PAGES pages 1 and 4 pages 1 thru 4

INTRODUCTION INTRODUCTION pages 5 and 6 pages 5 and 6

INSPECTION PROCEDURES INSPECTION PROCEDURES pages 1-7 thru 1-10 pages 1-7 thru 1-10 pages 1-15 and 1-16 pages 1-15 and 1-16

REPAIR LIMITS REPAIR LIMITS pages 3-13 and 3-14 pages 3-13 and 3-14

MINOR REPAIR MINOR REPAIR pages 4-2.1 and 4-2.2 pages 4-2.1 and 4-2.2 pages 4-73 and 4-74 pages 4-73 and 4-74

NOTE 1: Record the removal of a Temporary Revision on the Record of Temporary Revisions pages in this manual.

NOTE 2: When the manual revision has been inserted in the manual, record the information required on the Record of Revisions page in this manual.

NOTE 3: Pages distributed in this revision may include pages from previous revisions if they are on the opposite side of revised pages. This is done as a convenience to those users who wish to print a two-sided copy of the new revision.

HARTZELL PROPELLER INC.One Propeller PlacePiqua, Ohio 45356-2634 U.S.A.Telephone: 937.778.4200Fax: 937.778.4215

This page may be discarded after proper filing of the revision.

(This page is intentionally blank.)

Manual No. 17061-13-70Revision 8February 2018

Hartzell Propeller Inc.One Propeller PlacePiqua, Ohio 45356-2634 U.S.A.Phone: 937.778.4200Fax: 937.778.4215

Composite Propeller Blade Field Maintenance and Minor Repair

Manual

Legacy Composite N-shank Composite Bantam Composite

B7421(K) N7605(B,K)( ) ( )75A01-2( )( )7690( ) N7605C( ) L76A01X( )7890K N76M05C( )X H79A06X( )E8190K N7893( )E9193(B,K) N( )8301( )M10083(K) N( )8302( )A10460(E)(K) NC8834( )LM10585(A)(N)(B,K)+4 NC9208( )M10877K NC10245( ) Raptor CompositeE10950P(C)(B,K) NC10320( ) 76C03( )E11990K (J)NC10904( ) 78D01( )E12902K JNC10905( )E13890K108MH92138MH91

Inside Cover COVER 61-13-70 Rev. 8 Feb/18

COMPOSITE PROPELLER BLADE FIELD MAINTENANCE AND MINOR REPAIR MANUAL

170

© 2013, 2014, 2015, 2016, 2017, 2018 - Hartzell Propeller Inc. - All rights reserved

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REVISION 8 HIGHLIGHTS

Revision 8, dated February 2018, incorporates the following:

Front matter (Cover, Revision Highlights, etc.), has been revised to match this revision.

Minor language/format changes and renumbering, if applicable are marked with a revision bar, but are not listed below.

INTRODUCTION • Revisedthesection,"RequiredPublications"

INSPECTION PROCEDURES • RevisedFigure1-3,"RepairRegions-N-shankBladesWithOnlyTrailingEdgeFoam" • RevisedFigure1-5,"RepairRegions-BantamBlades" • RevisedTable1-1,"BladeTypeandBladeModelDesignations"

REPAIR LIMITS • RevisedTable3-1,"RepairLimitsbyDamageType": • 5. NickelErosionShield-ChordwiseCrack-ForAllAreasThatAreNotCovered ByAnExternalDe-iceorAnti-icingBoot

MINOR REPAIR • RevisedTable4-2,"ErosionTapeLength/Location(BladeswithoutDe-ice/Anti-icing BootOnly)"

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Page3 REVISION HIGHLIGHTS 61-13-70 Rev. 8 Feb/18


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REVISION 8 HIGHLIGHTS

1. Introduction

A. General

(1) This is a list of current revisions that have been issued against this manual. Please compare to RECORD OF REVISIONS page to ensure that all revisions have been added to the manual.

B. Components

(1) Revision No. indicates the revisions incorporated in this manual.

(2) Issue Date is the date of revision.

(3) Commentsindicatestheleveloftherevision.

(a) New Issue is a new manual distribution. The manual is distributed in its entirety. All the revision dates are the same and no change bars are used.

(b) Reissueisarevisiontoanexistingmanualthatincludesmajorcontentand/ormajorformatchanges.Themanualisdistributedinitsentirety.Allthe revision dates are the same and no change bars are used.

(c) MajorRevisionisarevisiontoanexistingmanualthatincludesmajorcontent or minor format changes over a large portion of the manual. The manual is distributed in its entirety. All the revision dates are the same, but change bars are used to indicate the changes incorporated in the latest revision of the manual.

(d) MinorRevisionisarevisiontoanexistingmanualthatincludesminorcontent changes to the manual. Only the revised pages of the manual are distributed. Each page retains the date and the change bars associated with the last revision to that page.

Revision No. Issue Date Comments

New Issue Oct/13 New IssueRev. 1 Oct/14 MajorRevisionRev. 2 Feb/15 Minor RevisionRev.3 May/15 Minor RevisionRev.4 Dec/15 Minor RevisionRev.5 Aug/16 Minor RevisionRev. 6 Nov/16 Minor RevisionRev. 7 Jun/17 Minor RevisionRev. 8 Feb/18 Minor Revision

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LIST OF EFFECTIVE PAGES

Chapter Page Rev. Level Date Cover and Inside Cover Cover and Inside Cover Rev. 8 Feb/18Revision Highlights 1 thru 4 Rev. 8 Feb/18Record of Revisions 1 and 2 Original Oct/13Record of Temporary Revisions 1 and 2 Original Oct/13Service Documents List 1 and 2 Original Oct/13Airworthiness Limitations 1 and 2 Original Oct/13List of Effective Pages 1 thru 4 Rev. 8 Feb/18Table of Contents 1 and 2 Rev. 4 Dec/15Introduction 1 and 2 Rev. 1 Oct/14Introduction 3 Rev. 4 Dec/15Introduction 4 Rev. 5 Aug/16Introduction 5 Rev. 8 Feb/18Introduction 6 Rev. 7 Jun/17Introduction 7 thru 12 Rev. 1 Oct/14Introduction 13 Rev. 4 Dec/15Introduction 14 and 15 Rev. 6 Nov/16Introduction 16 Rev. 1 Oct/14Inspection Procedures 1-1 and 1-2 Rev. 6 Nov/16Inspection Procedures 1-3 Rev. 1 Oct/14Inspection Procedures 1-4 Rev. 5 Aug/16Inspection Procedures 1-5 Rev. 3 May/15Inspection Procedures 1-6 Rev. 5 Aug/16Inspection Procedures 1-7 Rev. 8 Feb/18Inspection Procedures 1-8 Rev. 7 Jun/17Inspection Procedures 1-9 Rev. 8 Feb/18Inspection Procedures 1-10 thru 1-15 Rev. 5 Aug/16Inspection Procedures 1-16 Rev. 8 Feb/18Inspection Procedures 1-17 and 1-18 Rev. 5 Aug/16Damage Evaluation 2-1 and 2-2 Rev. 1 Oct/14Damage Evaluation 2-3 Rev. 5 Aug/16Damage Evaluation 2-4 Rev. 1 Oct/14Damage Evaluation 2-5 Rev. 7 Jun/17Damage Evaluation 2-6 Rev. 1 Oct/14Damage Evaluation 2-7 Rev. 7 Jun/17Damage Evaluation 2-8 Rev. 1 Oct/14Damage Evaluation 2-9 Rev. 7 Jun/17Damage Evaluation 2-10 Rev. 1 Oct/14

Page 1 LIST OF EFFECTIVE PAGES 61-13-70 Rev. 8 Feb/18


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Chapter Page Rev. Level Date Damage Evaluation 2-11 Rev. 7 Jun/17Damage Evaluation 2-12 Rev. 1 Oct/14Damage Evaluation 2-13 Rev. 7 Jun/17Damage Evaluation 2-14 Rev. 2 Feb/15Damage Evaluation 2-15 Rev. 7 Jun/17Damage Evaluation 2-16 Rev. 2 Feb/15Damage Evaluation 2-17 and 2-18 Rev. 7 Jun/17Repair Limits 3-1 Rev. 1 Oct/14Repair Limits 3-2 and 3-3 Rev. 2 Feb/15Repair Limits 3-4 and 3-5 Rev. 1 Oct/14Repair Limits 3-6 Rev. 6 Nov/16Repair Limits 3-7 thru 3-13 Rev. 1 Oct/14Repair Limits 3-14 Rev. 8 Feb/18Repair Limits 3-15 thru 3-40 Rev. 1 Oct/14Repair Limits 3-41 Rev. 5 Aug/16Repair Limits 3-42 thru 3-44 Rev. 1 Oct/14Repair Limits 3-45 Rev. 2 Feb/15Repair Limits 3-46 thru 3-59 Rev. 1 Oct/14Repair Limits 3-60 Rev. 4 Dec/15Repair Limits 3-61 thru 3-63 Rev. 1 Oct/14Repair Limits 3-64 Rev. 7 Jun/17Repair Limits 3-64.1 and 3-64.2 Rev. 2 Feb/15Repair Limits 3-65 thru 3-70 Rev. 1 Oct/14Minor Repair 4-1 and 4-2 Rev. 5 Aug/16Minor Repair 4-2.1 and 4.2.2 Rev. 8 Feb/18Minor Repair 4-2.3 and 4-2.4 Rev. 5 Aug/16Minor Repair 4-3 Rev. 5 Aug/16Minor Repair 4-4 thru 4-23 Rev. 1 Oct/14Minor Repair 4-24 Rev. 5 Aug/16Minor Repair 4-25 thru 4-30 Rev. 1 Oct/14Minor Repair 4-30.1 Rev. 2 Feb/15Minor Repair 4-30.2 Rev. 5 Aug/16Minor Repair 4-31 thru 4-33 Rev. 2 Feb/15Minor Repair 4-34 Rev. 1 Oct/14Minor Repair 4-35 Rev. 5 Aug/16Minor Repair 4-36 thru 4-38 Rev. 1 Oct/14Minor Repair 4-39 Rev. 5 Aug/16



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Chapter Page Rev. Level Date

Minor Repair 4-40 thru 4-44 Rev. 1 Oct/14Minor Repair 4-45 Rev. 7 Jun/17Minor Repair 4-46 Rev. 3 May/15Minor Repair 4-46.1 and 4-46.2 Rev. 3 May/15Minor Repair 4-47 thru 4-53 Rev. 1 Oct/14Minor Repair 4-54 Rev. 5 Aug/16Minor Repair 4-55 and 4-56 Rev. 1 Oct/14Minor Repair 4-57 Rev. 5 Aug/16Minor Repair 4-58 thru 4-60 Rev. 1 Oct/14Minor Repair 4-61 Rev. 5 Aug/16Minor Repair 4-62 Rev. 1 Oct/14Minor Repair 4-63 thru 4-65 Rev. 5 Aug/16Minor Repair 4-66 thru 4-73 Rev. 1 Oct/14Minor Repair 4-74 Rev. 8 Feb/18Minor Repair 4-75 and 4-76 Rev. 1 Oct/14Tooling and Materials 5-1 thru 5-4 Rev. 5 Aug/16



170


Chapter Page Rev. Level Date



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Page 5 INTRODUCTION 61-13-70 Rev. 8 Feb/18

Hartzell Propeller Inc. Owner's Manual/Blade Model ReferenceBlade Model Owner's Manual No. ATA No.

B7421(K) 145 61-00-45( )75A01-2( ) 411 61-00-1176C03( ) 480 61-00-80L76A01X( ) 411 61-00-1178D01( ) 486 61-10-86H79A06X( ) 411 61-00-11N7605(C)(B,K)-( ) 145 61-00-45N7605C( ) 145 61-00-45N76M05C( )X 341 -( )7690( ) 145 61-00-457890K 145 61-00-45N( )7893-( ) 145 61-00-45E8190K 147 61-00-47N( )8301( )-( ) 145 61-00-45N( )8302( )-( ) 145 61-00-45NC8834( ) 147 61-00-47E9193(B,K) 147 61-00-47NC9208( ) 147 61-00-47M10083(K) 146 61-00-46NC10245( ) 147 61-00-47NC10320( ) 147 61-00-47A10460(E)(K) 154 61-00-54LM10585(A)(N)( )+4 146 61-00-46M10877K 146 61-00-46E10950P(C)(B,K) 147 61-00-47E11990K 156A 61-10-56E12902K 147 61-00-47E13890K 160 61-00-60108MH92 300 -138MH91 300 -(J)NC10904( ) 147 61-00-47JNC10905( ) 147 61-00-47


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Page 6 INTRODUCTION 61-13-70 Rev. 7 Jun/17

(3) For Hartzell Propeller Inc. service literature and revisions, contact:

Hartzell Propeller Inc. Telephone: 937.778.4200 Attn:TechnicalPublicationsDepartment Fax:937.778.4215 One Propeller Place E-mail: [email protected] Piqua, Ohio 45356-2634 U.S.A.

(a) Selected information is also available on the Hartzell Propeller Inc. website at www.hartzellprop.com.

3. Personnel Requirements

A. Personnel Requirements

(1) Compliance to the applicable regulatory requirements established by the Federal Aviation Administration (FAA) or appropriate Aviation Authority is mandatory for anyone performing or accepting responsibility for any inspection and/or repair of any Hartzell Propeller Inc. product.

(2) Any person signing for or performing inspections and/or repairs to Hartzell Propeller Inc. composite parts should be familiar with the objectives and procedures associated with the inspection and/or repair of composite parts.

B. Minor Repair

(1) Damagethatiswithintheminorrepairlimitsasspecifiedinthismanualmayberepairedbyacertifiedairframeandpowerplantmechanic,orinternationalequivalent in accordance with the Minor Repairs chapter in this manual.

C. Major Repair

(1) Majorrepairworkisthatwhichexceedstheminorrepairlimitsasspecifiedinthis manual.

(2) To perform composite blade major repair, the propeller repair station must employ at least one individual with valid Composite Blade Overhaul, Major Repair,andRecertificationIndividualCertificationfromHartzellPropellerInc.

(3) All major repairs must be completed in a propeller repair station that is licensed by a government agency, e.g., FAA, EASA, CAA.

(4) Refer to the Hartzell Propeller Inc. website at www.hartzellprop.com or contact the Hartzell Propeller Inc. Product Support Department for a current list of authorized facilities.

4. Safe Handling of Paints and ChemicalsA. Alwaysusecautionwhenhandlingorbeingexposedtopaintsand/orchemicals

during propeller repair procedures.B. Before using paint or chemicals, always read the manufacturer’s label on the

containerandfollowspecifiedinstructionsandproceduresforstorage,preparation,mixing,andapplication.

C. Refer to the product’s Material Safety Data Sheet (MSDS) for detailed information about physical properties, health, and physical hazards of any chemical.

Page 1-7 INSPECTION PROCEDURES 61-13-70 Rev. 8 Feb/18


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Repair Regions - N-shank Blades With Only Trailing Edge Foam Figure 1.3, Page 2 of 2

Blade Model "X" "Y" "Z"

N7605(B,K)-4 2.67 inches (67.8 mm) 22.00 inches (558.8 mm) 17.43 inches (442.7 mm)

N7605(B,K)-2 3.67 inches (93.2 mm) 23.00 inches (584.2 mm) 17.93 inches (455.42 mm)

N7605(B,K) 4.67 inches (118.6 mm) 24.00 inches (609.6 mm) 18.43 Inches (468.1 mm)

N7605(B,K)+2 5.67 inches (144.0 mm) 25.00 inches (635.0 mm) 18.93 inches (480.8 mm)

N7605C( ) 4.67 inches (118.6 mm) 24.00 inches (609.6 mm) 18.43 Inches (468.1 mm)

N76M05CX 4.67 inches (118.6 mm) 24.00 inches (609.6 mm) 18.43 Inches (468.1 mm)

N76M05C-2X 3.67 inches (93.21 mm) 23.00 inches (584.2 mm) 17.43 Inches (437.6 mm)

N( )7893-( ) 4.50 inches (114.3 mm) 25.00 inches (635.0 mm) 18.93 inches (480.8 mm)

N( )8301( ) 10.53 inches (267.4 mm) 26.24 inches (666.4 mm) 20.17 inches (512.3 mm)

N( )8301( )-7 7.03 inches (178.5 mm) 22.74 inches (577.5 mm) 18.42 inches (467.8 mm)


N( )8302( ) 10.53 inches (267.4 mm) 26.24 inches (666.4 mm) 20.17 inches (512.3 mm)


NC9208( ) 3.63 inches (92.2 mm) 28.31 inches (719.0 mm) 21.74 inches (552.1 mm)

NC10245( ) 5.20 inches (132.0 mm) 34.00 inches (863.6 mm) 24.24 inches (615.6 mm)NC10320( ) 5.70 inches (144.7 mm) 34.19 inches (868.4 mm) 24.49 inches (622.0 mm)

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Repair Regions - N-shank Blades With Both Trailing Edge and Leading Edge Foam Figure 1-4

TI-1

3501

4a

Tip and Trailing Edge Region ("X" is measured from the tip

of the blade)

Trailing Edge Foam Region

"Y"Inboard Limit of the

Trailing Edge Foam Region Repair From the Blade Tip

"X"

Inboard Region

Outboard Region

"W"

Leading Edge Foam Region

Inboard Limit of theLeading Edge Foam Region Repair From the Blade Tip

"V""Z"

Distance From the Blade Tip to the Inboard Region of the

Blade

Refer to the Damage Evaluation chapter in this manual to identify the applicable damage type and repair limit for the blade models and affected regions shown in this table.

Blade Model "V" "W" "X" "Y" "Z"

NC8834( ) 27.47 inches (697.7 mm)

5.63 inches (143.0 mm)

1.03 inches (26.1 mm)

27.47 inches (697.7 mm)

20.74 inches (526.7 mm)

(J)NC10904( ) 35.60 inches (904.2 mm)

6.62 inches (168.2 mm)

3.13 inches (79.5 mm)

35.60 inches (904.2 mm)

25.99 inches (660.1 mm)

JNC10905( ) 35.60 inches (904.2 mm)

6.62 inches (168.2 mm)

3.13 inches (79.5 mm)

35.60 inches (904.2 mm)

25.99 inches (660.1 mm)



170

Repair Regions - Bantam Blades Figure 1-5

Blade Model "X" "Y" "Z"( )75A01-2( ) 5.75 inches (146.0 mm) 21.94 inches (557.2 mm) 18.00 inches (457.5 mm)

L76A01X 13.85 inches (351.7 mm) 26.22 inches (665.9 mm) 18.88 inches (479.5 mm)

H79A06X 7.50 inch (190.5 mm) 24.17 inches (613.9 mm) 19.50 inches (495.3 mm)

TI-1

3501

3a


Inboard Region

Outboard Region

Tip and Trailing Edge Region ("X" is measured from the tip

of the blade)"Y"

Inboard Limit of theTrailing Edge Foam Region Repair From the Blade Tip

"Z"Distance From the Blade Tip to the Inboard Region of the

Blade


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Blade Model "X" "Y" "Z"

76C03-2 6.85 inches (173.9 mm) 22.25 inches (641.3 mm) 17.70 inches (449.58 mm)

76C03-7 4.35 inches (110.4 mm) 19.75 inches (501.6 mm) 16.45 inches (417.83 mm)

78D01 2.95 inches (74.9 mm) 25.25 inches (641.3 mm) 18.93 inches (480.8 mm)

Repair Regions - Raptor Blades Figure 1-6

TI-0

0055

A

Tip and Trailing Edge Region

("X" is measured from the tip

of the blade)


"Y"Inboard Limit of theTrailing Edge Foam

Region Repair From the Blade Tip

"Z"Distance From the Blade Tip to the Inboard Region of the

Blade

"X"

Inboard Region Outboard

Region


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170

BLADE TYPE BLADE MODEL DESIGNATION

Legacy Kevlar® ( )7690( )7890K

B7421(K)E8190K

M10083(K)A10460(E)(K)

LM10585(A)(N)(B,K)M10877K

E10950P(C)(B,K)E11990KE12902K

Legacy Carbon E13890KE9193(B,K)108MH92138MH91

N-shank Kevlar® Carbon Hybrid N7605(B,K)-( )N( )7893-( )

N-shank Carbon With Only Trailing Edge Foam N7605C( )

N76M05CXN76M05C-2XN( )8301( )-( )N( )8302( )-( )

NC9208( )NC10245( )NC10320( )

With Both Trailing Edge Foam and Leading Edge Foam

NC8834( ) (J)NC10904( ) JNC10905( )

Blade Type and Blade Model Designations Table 1-1, Page 1 of 2

E. Blade Type and Blade Model Designations

(1) For blade types and the associated blade model designation, refer to Table 1-1 in this chapter.

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Repair Limits by Damage Type Table 3-1 - continued

CAUTION: REFERTOTABLE2-1INTHEDAMAGEEVALUATIONCHAPTEROFTHISMANUALFORTHEAPPLICABLEDAMAGETYPEANDREPAIRLIMITSBYBLADEMODEL.REFERTOTHISTABLEFORTHEAIRWORTHYANDMINORREPAIRLIMITSFOREACHDAMAGETYPE.

4. NICKELEROSIONSHIELD-DEBOND -FORALLAREASTHATARENOTCOVERED BYANEXTERNALDE-ICEORANTI-ICINGBOOT

REFER TO FIGURE3-1

LIMITS DESIGNATION

AIRWORTHY DAMAGE LIMITS

MINOR REPAIR INSTRUCTIONS

(a) LIMITS 1 Amaximumof20%oftheerosionshieldmaybedebondedinany 6inch(153mm)lengthoftheerosionshield.

Adebondthatiswithintheairworthydamagelimitsandisnofartherthan0.25inch(6.3mm)fromthetrailingedgemayberepairedinaccordancewith section2.A."DebondExtendingtotheTrailingEdgeand/oraCrack" in theMinorRepairchapterofthismanual. Majorrepairmaybepermitted,refertotheNOTEatthebottomofthispage.

NOTE:FORPERSONNELAUTHORIZEDTOPERFORMMAJORREPAIR, REFERTOTHEINTRODUCTIONCHAPTEROFTHISSERVICEMANUAL.


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Page 3-14 REPAIR LIMITS 61-13-70 Rev.8Feb/18

Repair Limits by Damage Type Table 3-1 - continued

CAUTION: REFERTOTABLE2-1INTHEDAMAGEEVALUATIONCHAPTEROFTHISMANUALFORTHEAPPLICABLEDAMAGETYPEANDREPAIRLIMITSBYBLADEMODEL.REFERTOTHISTABLEFORTHEAIRWORTHYANDMINORREPAIRLIMITSFOREACHDAMAGETYPE.

5. NICKELEROSIONSHIELD-CHORDWISECRACK -FORALLAREASTHATARENOTCOVEREDBYANEXTERNALDE-ICEORANTI-ICINGBOOT

REFER TO FIGURE3-1

LIMITS DESIGNATION

AIRWORTHY DAMAGE LIMITS

MINOR REPAIR INSTRUCTIONS

(a) LIMITS 1 Twofullwidth,chordwisecracksmaynotbewithin6.0inches(153mm)ofeachother.Afullwidth,chordwisecrackmaynotbewithin6.0inches (153mm)ofthebladetip.

Blades with a de-ice or anti-icing boot: Afullwidth,chordwisecrackmaynotbewithin1.0inch(25mm)oftheoutboardendofthede-ice/anti-icingboot. Forafullwidth,chordwisecrackthatisinanareafrom1.0inch(25mm)to6.0inches(153mm)outboardoftheendofthede-ice/anti-icingboot,themaximumpermittedareaofdebondbetweentheoutboardendofthe de-ice/anti-icingboot andthefullwidthcrackis20%. Thedebondmustnotextendunderthede-ice/anti-icingboot.

Blades without a de-ice or anti-icing boot: Afullwidth,chordwisecrackmaynotbewithin6.0inches(153mm)oftheinboardendoftheerosionshield.

Minorrepairisnotauthorized. Majorrepairmaybepermitted, refertotheNOTEatthebottomof thispage.

NOTE:FORPERSONNELAUTHORIZEDTOPERFORMMAJORREPAIR, REFERTOTHEINTRODUCTIONCHAPTEROFTHISSERVICEMANUAL.

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LIST OF FIGURES

Repair of Debond at Edge of Nickel Erosion Shield ............... Figure 4-1 .....................4-4Using C-Clamps to Apply Pressure

to Erosion Shield Debond Repair ...................................... Figure 4-2 .....................4-4Field Repair of Minor Damage in Erosion Shield.................... Figure 4-3 .....................4-7Determining Method for Repair

of Stainless Steel Erosion Shield Debond......................... Figure 4-4 ...................4-11Using Screws to Repair Debond

in Stainless Steel Erosion Shield ..................................... Figure 4-5 ...................4-12Using Rivets to Repair Debond

in Stainless Steel Erosion Shield ...................................... Figure 4-6 ...................4-14Blade Cuff Crack Repair ......................................................... Figure 4-7 ...................4-18Cracks in the Blade Cuff ......................................................... Figure 4-8 ...................4-21Material Layers for a Blade Cuff Repair ................................. Figure 4-9 ...................4-23Unidirectional Material and Woven Material

in a Sanded Area of a Carbon Blade................................. Figure 4-10 .................4-26Laminating Pattern ................................................................ Figure 4-11..................4-27Material Layers for a Repair in the Trailing Edge Foam ......... Figure 4-12 .................4-32Crushed Blade Trailing Edge Repair (Cross Section View) .... Figure 4-13 .................4-34Bevel Length and Damaged Material Depth........................... Figure 4-14 .................4-35Bevel Length and Depth of Damaged Material Removed ...... Figure 4-15 .................4-39N-shank Kevlar®/Carbon Hybrid Blade Repair Limits ............. Figure 4-16 .................4-48N-shank Kevlar®/Carbon Hybrid Blade Repair Limits ............. Figure 4-17 .................4-48N-shank Kevlar®/Carbon Hybrid Blade Repair Limits ............. Figure 4-18 .................4-49N-shank Kevlar®/Carbon Hybrid Blade Repair Limits ............. Figure 4-19 .................4-49Sanding to Expose Erosion Shield ......................................... Figure 4-20 .................4-53Material Layers of the N-shank Kevlar®/Carbon Hybrid Blade Figure 4-21 .................4-54Symetrical Repairs ................................................................. Figure 4-22 .................4-58Repair Layers ......................................................................... Figure 4-23 .................4-62

LIST OF TABLES

Repair Materials ..................................................................... Table 4-1 ..................4-30.2Erosion Tape Length/Location

(Blades without De-Ice/Anti-Icing Boot Only) .................... Table 4-2 .....................4-74

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7. Finish Procedures

CAUTION: INSTRUCTIONS AND PROCEDURES IN THIS SECTION INVOLVE PROPELLER CRITICAL PARTS. REFER TO THE INTRODUCTION CHAPTER OF THIS MANUAL FOR INFORMATION ABOUT PROPELLER CRITICAL PARTS.

NOTE: SpecificHartzellPropellerInc.manualsandservicedocumentsareavailableontheHartzellwebsiteatwww.hartzellprop.com.RefertotheRequiredPublications section in the Introduction chapter of this manual for the identificationofthesepublications.

A. Paint

(1) Propellerbladesarepaintedwithadurablespecializedcoatingthatisresistantto abrasion. If this coating becomes eroded, it is necessary to repaint the blades to provide proper corrosion and erosion protection.

(2) Polane®finishcoatingisamoredurablecoatingthantheaerosolfinishcoating.However,theaerosolfinishcoatingisaquickerprocessandisanacceptableoptionforfieldrepairsgiventimeandlocationconstraints.

(a) Regardlessofthefinishoption,washprimerMixNumber3isneededforgood paint adhesion to the erosion shield.

1 Wash primer Mix Number 3 is required for use with the Polane finish option when refinishing any portion of the erosion shield.

2 Wash primer Mix Number 3 is not required for use with the aerosol finish option.

3 When applying wash primer Mixture Number 3, do so in accordance with the section, "Mixtures" in the Tooling and Materials chapter in this manual.

(b) If the Polane® finish coat is preferred, contact one of the following:

1 Anauthorizedpropellerrepairfacilitytocompletethefinishprocedure.

2 HartzellPropellerInc.ProductSupportfortheapplicableprocedureinformationfromHartzellPropellerInc.StandardPracticesManual202A (61-01-02)

(c) Iftheaerosolfinishcoatispreferred,refinishtherepairedarea(s)in accordance with the Painting of Composite Blades section of the MaintenacePracticeschapterintheapplicableHartzellPropellerInc.propeller owner's manual.

61-13-70 Page 4-74Rev. 8 Feb/18MINOR REPAIR


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B. Erosion Tape(1) Installation of Erosion Tape CM158, is required for N7605(C)( ), N( )7893( ),

N( )8301( )-( ), N( )8302( )-( ), 75A01-2( ), L76A01X( ), N76M05C( )X, and H79A06X( ) non-booted blades.

CAUTION 1: EROSION TAPE CM158 MUST BE INSTALLED ON ALL N7605(C)( ), N( )7893( ), N( )8301( )-( ), N( )8302( )-( ), 75A01-2( ), L76A01X( ), N76M05C( )X, AND H79A06X( ) NON-BOOTED BLADES. FAILURE TO INSTALL THE EROSION TAPE ON THESE PROPELLER MODELS CAN RESULT IN SERIOUS DAMAGE TO THE BLADE.

CAUTION 2: DO NOT INSTALL EROSION TAPE CM158 ON A BLADE WITH AN ANTI-ICE BOOT. INSTALLATION OF EROSION TAPE CM158 WILL PREVENT PROPER FUNCTION OF THE ANTI-ICING BOOT.

NOTE: The erosion tape CM158 may be installed on the blade before propeller assembly, after propeller assembly, or on-wing.

(a) A minimum temperature of 60° F (10° C) is required for erosion tape CM158 application.

(b) Keep hands clean at all times.

CAUTION: DO NOT INSTALL EROSION TAPE CM158 ON A BLADE THAT HAS PAINT THAT HAS CURED LESS THAN 8 HOURS.

(c) Ifperformedinconjunctionwithpaintrefinishortouch-up,paintmustcurefor a minimum of 8 hours before installing erosion tape CM158.

(d) Cut erosion tape CM158 to the correct length for each blade. Refer to Table 4-2.

Erosion Tape Length / Location (Blades without De-Ice/Anti-Icing Boot Only) Table 4-2

Blade Model Erosion Tape Length (per Blade)

Erosion Tape Edge Inboard Location From the

Outboard End of the Metal ShankN7605(C)( ) 14.87 inches (377.6 mm) 1.00 inch (25.4 mm)N( )7893( ) 13.33 inches (338.5 mm) 1.00 inch (25.4 mm)

N( )8301( )-( ) 13.12 inches (333.2 mm) 1.00 inch (25.4 mm)N( )8302( )-( ) 13.12 inches (333.2 mm) 1.00 inch (25.4 mm)( )75A01-2( ) 14.85 inches (377.1 mm) 1.00 inch (25.4 mm)

76C03( ) 14.50 inches (368.3 mm) 1.00 inch (25.4 mm)L76A01X( ) 15.60 inches (396.2 mm) 1.00 inch (25.4 mm)

N76M05C( )X 14.87 inches (377.6 mm) 1.00 inch (25.4 mm)H79A06X( ) 14.87 inches (377.6 mm) 1.00 inch (25.4 mm)