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• Certification Basis is not a Design Specification, nor a Safety Policy Handbook
Responsible aircraft manufacturers have to deal with all three items and the
envelope of the three sets of requirements
• Agreed certification basis is the applicable requirement plus ……
Special Condition: new or modified regulations due to e.g. new technologies,
resolution of an unsafe condition
Exemption (FAA) / Deviation (EASA): regulation substantiated not applicable
Elect to comply: regulation under draft but not in the existing code (risk
mitigation
Reversion: (derivative only) previous regulation version used
© AIRBUS All rights reserved Confidential and proprietary document
Ref.: EAA_L24PR0702285_v3 Issue: 17 Apr '07 Page 12
Example of CRI
Special
Condition, not
directly
ATA24
responsibility
Interpretative
Material
© AIRBUS All rights reserved Confidential and proprietary document
Ref.: EAA_L24PR0702285_v3 Issue: 17 Apr '07 Page 13
Flow Chart of TC process - Phase 3
Certification Basis
update
EASA & FAA
Activities
EASA (with FAA
as agreed)
Panel Meetings
FAA declares
validation items and
finalizes delegation to
EASA
EASA & FAA Type
Board Meetings
Certification Basis
update
Work on approved
documentation starts
© AIRBUS All rights reserved Confidential and proprietary document
Ref.: EAA_L24PR0702285_v3 Issue: 17 Apr '07 Page 14
The Type Certification process / Phase 3 -
Agreement on Means of Compliance and Certification Plans
For each technical discipline, a detailed certification plan is prepared for
discussion with the Aviation Authorities specialists to obtain their
agreement
This certification plan must contain:
• a general description of the design/characteristics/features relevant for the
considered discipline (for example for a system: the architecture, main
functions, operation)
• a list of all relevant requirements and interpretative material from the initial
certification basis
• the proposed Means of Compliance (MOC) associated to each requirement
• the list of Certification Documents to be produced to demonstrate compliance
with applicable requirements
• the proposed compliance demonstration methods, the list and description of
the major Certification tasks with associated planning
(in particular : laboratory, flight, simulator or bench tests…), and the
compliance demonstrations to be witnessed by the AA and those to be
approved under manufacturers DOA privileges
© AIRBUS All rights reserved Confidential and proprietary document
Ref.: EAA_L24PR0702285_v3 Issue: 17 Apr '07 Page 15
Phase 3 - MoC
The Means of
Compliance for
each Rule
Paragraph and
ATA Chapter must
be agreed upon at
the start of the
final Certification
process
© AIRBUS All rights reserved Confidential and proprietary document
Ref.: EAA_L24PR0702285_v3 Issue: 17 Apr '07 Page 16
Flow Chart of TC process - Phase 4
EASA & FAA
Activities
FAA Review of
non-delegated
items
EASA Final TBM
FAA final TBM
Issue of EASA TC
Issue of FAA TC
Certification Basis
update
© AIRBUS All rights reserved Confidential and proprietary document
Ref.: EAA_L24PR0702285_v3 Issue: 17 Apr '07 Page 17
The Type Certification Process
Phase 4 - Compliance Demo - Final Phase
• Compliance Demonstration Phase (FAA involvement only
for retained items): Equipment Qualification, Simulations,
Lab/Gnd/Flight Tests/AA Witnessing, Inspection etc.
Frame
Actuator
Uplock
Turbine
Gearbox
Strut &
drive shaft
Generator
BEIGE
(Electrical Generation Test Facility)
Iron Bird
RAT
© AIRBUS All rights reserved Confidential and proprietary document
Ref.: EAA_L24PR0702285_v3 Issue: 17 Apr '07 Page 18
Design Organisation Approval (Part 21, Subpart J)
• Prerequisite for TC
• Organisational structure
• Responsibilities
• Procedures
• Resources
• Independent monitoring of
organisation
• Independent checking of product
compliance
DESIGN ASSURANCE SYSTEM
DESIGN
ORGANISATION
MANUAL
EASA
INVESTIGATION Design
Organisation
Approval
© AIRBUS All rights reserved Confidential and proprietary document
Ref.: EAA_L24PR0702285_v3 Issue: 17 Apr '07 Page 19
Design Organisation Approval (Part 21, Subpart J)
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