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Applying DO-254 objectives referencing DO-178C activities Özgür Babur 1/23 AVIATION ELECTRONICS EUROPE 25.03.2015
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Page 1: Applying DO-254 objectives referencing DO-178C activities ... · PDF fileApplying DO-254 objectives referencing DO-178C activities Özgür Babur 1/23 AVIATION ELECTRONICS EUROPE 25.03.2015

Applying DO-254 objectives referencing DO-178C activities

Özgür Babur

1/23

AVIATION ELECTRONICS EUROPE25.03.2015

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CONTENT

1. Introduction – Who we are?2. Definitions-Motivatation3. Developing a Certifiable System4. Evidence for Compliance5. Similarities in both SW and HW

2/23

4. Evidence for Compliance5. Similarities in both SW and HW

Systems 6. HW Certification Considerations

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INTRODUCTION – WHO WE ARE?

STM A.Ş.

In business since 1991

Consultancy Services

3/23

System Engineering Services

Software Engineering Services

Military/Civil Airworthiness Certification Support Services – Since 2004

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CERTIFICATION SUPPORT SERVICES

�A wide range of Airworthiness Certificationconsultancy services for both civil/military aviation authorities and aircraft manufacturers

4/23

STM CERTIFICATION

SUPPORT SERVICES

AUTHORITYAUTHORITY MANUFACTURERSMANUFACTURERS

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DEFINITIONS & CONCEPT

RTCA DO-178C/EUROCAE ED-12C :

SOFTWARE Considerations in Airborne Systems and EquipmentCertification, December 2011

Former : DO-178B, December 1992

5/23

RTCA DO-254/EUROCAE ED-80:

Design Assurance Guidance For Airborne Electronic HARDWARE, December 2000

Former : NONE

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MOTIVATION

In Turkey we have so many avionics equipment development projects:

Avionics Upgrade Projects(C-130, T-38, F-16)

New Aircrafts

6/23

New Aircrafts

Unmanned Air Vehicles(ANKA, Karayel)

Rotary Wing(T-129 Attack, Basic Utility)

Fixed Wing(Regional Jet, Tx/Fx Trainer-Fighter)

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MOTIVATION

Turkish manufacturers now have to show compliance to:

CS/FAR 23, 25, 27, 29

CS E-50, STANAG 4671(UAVs)

7/23

CS E-50, STANAG 4671(UAVs)

RTCA DO-178C& RTCA DO-254

Basic rules for all equipment installations

23/25/27/29.1301-1309

E-50 (d,f)

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PURPOSE

Key objectives both listed both in DO-254 & DO-178C

Analogy from the older one(DO-178) for showing compliance to DO-254

Industry’s experience on SW design assurance is more

8/23

Industry’s experience on SW design assurance is more than HW design assurance

Avionics box manufacturers should be agile to HW changes

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DEVELOPING A CERTIFIABLE SYSTEM

Should have best fitting company processes – Peer Reviews, Quality/Process Assurance for independent monitoring, Strong Configuration Management

Apply the rules for certification goal from the begining

9/23

Apply the rules for certification goal from the begining and apply to the entire lifecycle

NOT to exceed the COST

NOT to exceed the SCHEDULE

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DO-178B/C Software DO-254 Hardware

DESIGN ASSURANCE

ALL LEVELS OF SWOS, BSP, DRIVERS, APPLICATIONS

ALL LEVELS OF HARDWARELRU, CIRCUIT CARD, PLD

VERIFICATION LEVEL A AND LEVEL B LEVEL A AND LEVEL B

SIMILARITIES IN BOTH SW AND HW SYSTEMS

10/23

VERIFICATION INDEPENDENCE

LEVEL A AND LEVEL B SPECIFIC IN TABLES A-1 TO 10

LEVEL A AND LEVEL B

TOOL QUALIFICATION

A FULL SET IS REQUIRED FOR ALL DEVELOPMENT AND VERIFICATION TOOLS

DEFINED IN SECTION 11.4.1 OF DO-154

COVERAGE ANALYSIS

SW CODE STRUCTURAL COVERAGE ANALYSIS(SCA) TABLE A-7

ELEMENENTAL ANALYSIS FOR VHDL CODE - PCBEASA CERT MEMO – FAA REPORTS

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SIMILARITIES IN BOTH SW AND HW SYSTEMS

DO-178B/C Software DO-254 Hardware

ON TARGET REQUIREMENTBASED TESTING

ON TARGET HARDWARESIMULATION CREDIT MAY BE TAKEN

MAY BE DIFFICULT IN CIRCUIT TESTING SIMULATION CREDIT MAY BE PROBLEMATIC

11/23

INDEPENDENT MONITORING

QUALITY ASSURANCE IN ALL LEVELS{A, B, C, D}

PROCESS ASSURANCE IN LEVELS{A, B}

TEXT RTCA DO-178C/EUROCAE ED-12CPUBLISHED IN DECEMBER 13, 2011 WORKING GROUP SC-167, WG-12

RTCA DO-254/EUROCAE ED-80 PUBLISHED IN APRIL 19, 2000WORKING GROUP SC-205

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COMMON OBJECTIVES IN BOTH BOOK TEXTS

DO-178C # of Objectives for DAL A (TOTAL 71)

Planning => 7

Development => 7

12/23

Verification of Development => 29

Testing => 5

Verification of Testing => 9

CM, QA & Liason => 14

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COMMON OBJECTIVES IN BOTH BOOK TEXTS

DO-254 # of Objectives for DAL A (TOTAL 35)

Planning => 4

Design => 17

13/23

Validation and Verification => 7

CM & PA => 6

Advanced Verification => 1

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COMMON OBJECTIVES IN BOTH BOOK TEXTS

178C 254 Common

Planning 7 4 4

Design 7 17 7

14/23

V&V 43 8 8

Integral 14 6 6

Result 25

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A BASIC COMMON INFRASTUCTURE IF YOU DEVELOP BOTH HW AND SW

You have to have a common;

Templates for Planning Documents

PSAC vs. PHAC

15/23

SVP vs. HVVP

SQAP vs. HPAP etc.(Development Plan, CM Plan)

Requirements Capture Methodology(Inputs to Outputs as a Transfer Function)

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A BASIC COMMON INFRASTUCTURE IF YOU DEVELOP BOTH HW AND SW

You have to have a common;

Testing Approach(Partition Based, Pin Level)

Similar Standards for source code and HDL generation

16/23

generation

Source Code and HDL Coverage Analysis Methods

Configuration Management

Quality/Process Assurance Mechanisms

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ALTERNATIVE MEANS FOR MODIFIABLE SW SYSTEMS AND OBJECT ORIENTED TECH.

For RTCA DO-178C

Why use OO technology?

To be modifieable

17/23

FOR RTCA DO-254

To be modified cost effectively

Is there such Technology?

Model Based Development

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For RTCA DO-178B

CAST Paper #8:

Use of the C++ Programming Language

ALTERNATIVE MEANS FOR MODIFIABLE SW SYSTEMS AND OBJECT ORIENTED TECH.

18/23

For RTCA DO-178C

RTCA DO-332 OO Technology and Related Techniques

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For RTCA DO-178C

RTCA DO-331 Model Based Development and Verification Supplement

For RTCA DO-254

MODEL BASED DEVELOPMENT FOR SW AND HDL

19/23

For RTCA DO-254

Modelling Standards to generate Specification/Desing Model should be defined

DO-254 does not fit such a paradigm(Ask DO-331)

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Pay attention to have a common evidence infrastructrefor compliance for both HW and SW;

Pay attention on key objectives/activities/outcomes

Planning

CONCLUSIONS

20/23

Planning

Tool Qualification

Peer Reviews

Independent Verification

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BUT ALSO REMEMBER...

To distinguish for the technologies specific for the Hardware and the Software....

CONCLUSIONS

21/23

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THANKS FOR LISTENING!

�Özgür BABUR – Electronic Hardware Certification Group Leader

� STM(Savunma Teknolojileri Mühendislik ve Ticaret) A.Ş.

22/23

A.Ş.

[email protected]

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ANKARA TEKNOLOJİ GELİŞTİRME BÖLGESİ,

BİLKENT CYBERPARK, E BLOK 5.CADDE NO: 6/A

06800, ANKARA, TURKIYE

t : 0 312 266 35 50 f : 0 312 266 35 51

www.stm.com.tr

© STM 2015

23/23

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