AMC and GM to CAR 21

276 Pages·2007·2.28 MB·English

Directorate General of Civil Aviation
_______________________________________________________________________

AMC and GM to CAR 21

Acceptable Means of Compliance and Guidance
Material for the airworthiness and environmental
certification of aircraft and related products, parts and
appliances, as well as for the certification of design and
production organizations
AMC & GM for CAR 21

CAR 21
Acceptable Means of Compliance and Guidance Material

TABLE OF CONTENTS

TERMINOLOGY………………………………………………………………………..1

Subpart A – General.…………………………………………………………………….2

GM 21.3(a) The system for collection, investigation and analysis of data……………2
GM 21.3(b) Occurrence reporting…………………………………………………….2
AMC 20.8 Occurrence reporting……………………………………………………...2
AMC 21.3(b)(2) Reporting to DGCA ……………………………………….............24
GM 21.3B(d)(4) Defect correction – Sufficiency of proposed corrective action …...25
AMC 21.3B(b) Unsafe condition ……………………………………………………37
GM 21.3B(b) Determination of an unsafe condition ……………………………......38
AMC 21.4 Transferring of information on eligibility and approval status from the
design holder to production organisations…………………………………………...43

Subpart B – Type certificates. ……………………………………………………….. 45

GM 21.14(b) Eligibility for alternative procedures ……………………………… ...45
AMC 21.14(b) Alternative Procedures. …………………………………………. …45
GM 21.16B Special Conditions………………………………………………….. …51
GM 21.33 Investigation and Tests. ………………………………………………….51
GM 21.35 Flight Tests.……………………………………………………................51
GM 21.35(b)(2) Objective and Content of Function and Reliability Testing……….52
GM 21.35(f)(1) Flying Time for Function and Reliability Testing…..……………...52
GM 21.35(f)(2) Flying Time for Function and Reliability Testing…….……………52

(Subpart C – Not applicable)…………………………………………………………..53

Subpart D – Changes to type-certificates …………………………………………….54

GM 21.91 Classification of changes to a type design ……………………………. ...54
GM 21.93(b) Major Changes: Application ………………………………………….62
GM 21.101 Establishment of the type-certification basis of
Changed Aeronautical Product……………………………………………………....62
Appendix 1 to GM 21.101 CLASSIFICATION OF CHANGES……………………76
Appendix 2 to GM 21.101 PROCEDURE FOR
EVALUATING IMPRACTICALITY OF APPLYING
LATEST REQUIREMENTS TO A CHANGED PRODUCT …….........................115
Appendix 3 to GM 21.101 THE USE OF SERVICE
EXPERIENCE IN THE CERTIFICATION PROCESS…………………………...126

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Subpart E – Supplemental type-certificates....………………………………………130

GM 21.112B Demonstration of capability for
supplemental type-certificate cases………………………………………………....130

Subpart F – Production without production organisation approval………………134

GM No. 1 to 21.121 Applicability - Individual product, part or appliance………...134
GM No. 2 to 21.121 Applicability - Applicable design data.....................................134
AMC No. 1 to 21.122 Eligibility – Link between design and production……….…134
AMC No. 2 to 21.122 Eligibility – Link between design and production……….....136
GM 21.124(a) Application – Application form………………………………….…139
GM 21.124(b)(1)(i) Applicability –
Inappropriate approval under Subpart G…..………………………………………..140
GM 21.124(b)(1)(ii) Certification or approval needed in advance of
the issue of a POA……………………………………………………………….....140
GM 21.124(b)(2) Application - Minimum information to
include with the application…………………………………………………….…..141
GM No. 1 to 21.125 Letter of agreement - Meaning of individual………………...141
GM No. 1 to 21.125(b) Letter of agreement - Contents of the Manual…………….141
GM No. 2 to 21.125(b) Letter of agreement - Production Inspection System:
Functional Tests………………………………………………………………….…143
GM 21.125(c) Letter of agreement – Assistance………………………..………….143
GM 21.125(d) Letter of agreement – authorized signatory…………………...……143
GM No. 1 to 21.125B(a) Uncontrolled non-compliance
with applicable design data…………………………………………………………144
GM No. 2 to 21.125B(a) Examples for level one findings…………………...…….144
GM 21.126 Production Inspection System……………………………………...….144
GM 21.126(a)(1) Production Inspection System –
Conformity of supplied parts, appliances and material…………………………….144
GM 21.126(a)(2) Production Inspection System –
Identification of incoming materials and parts……………………………………..145
GM No. 1 to 21.126(a)(3) Production Inspection System –
List of specifications……………………………………………………..…………146
GM No. 2 to 21.126(a)(3) Production Inspection System –
Means of checking of the production processes………………………….………...146
GM 21.126(a)(4) Production Inspection System –
Applicable design/production data procedures…………………………………….147
GM 21.126(b)(1) Production Inspection System –
Inspection of parts in process………………………………………………………147
GM 21.126(b)(2) Production Inspection System –
Suitable storage and protection…………………………………………………….147
GM 21.126(b)(3) Production Inspection System –
Use of derived data instead of original design data………………………………..148

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GM 21.126(b)(4) Production Inspection System –
Segregation of rejected material……………………………………………………148
GM 21.126(b)(5) Production Inspection System –
Engineering and manufacturing review procedure…………………………………148
GM 21.126(b)(6) Production Inspection System –
Recording and record keeping……………………………………………………...149
GM No. 1 to 21. 126B Independent Monitoring Function…………………………150
GM No. 2 to 21.126B Adequacy of procedures and monitoring function…………150
GM 21.126C Investigation- Arrangements…………………………………….…150
GM 21.127 Approved production ground and flight tests……………………..…..151
GM No. 1 to 21.128 Acceptable functional test – Engines……………………..….151
GM No. 2 to 21.128 Acceptable functional test –Variable pitch propellers…..…...151
GM No. 3 to 21.128 Acceptable functional test -Engines and Propellers……...…..151
GM 21.129(a) Availability for inspection by DGCA…………………………..…..152
AMC No. 1 to 21.129(c) Obligations of the manufacturer –
Conformity of prototype models and test specimens……………………………….152
AMC No. 2 to 21.129(c) Obligations of the manufacturer –
Conformity with Applicable Design Data………………………………………….152
AMC No. 3 to 21.129(c) Obligations of the manufacturer –
Condition for safe operation………………………………………………………..152
AMC No. 1 to 21.130(b) Statement of Conformity .
for Complete Aircraft………………………………………………………….……154
AMC No. 2 to 21.130(b) Statement of Conformity
for Products (other than complete aircraft),
parts, appliances and materials –
The Authorised Release Certificate (DGCA Form 1)………………………………158
AMC 21.130(c) Validation of the Statement of Conformity……………….………167
AMC 21.130(c)(1) Initial transfer of ownership……………………………………167

Subpart G – Production organisation approval for
products, parts and appliances………………………………………………….……169

GM 21.131 Scope – Applicable design data………………………………...……...169
GM 21.133(a) Eligibility – Approval appropriate
for showing conformity…..………………………………………………………....169
AMC No. 1 to 21.133(b) and (c) Eligibility –
Link between design and production organizations………………………………...170
AMC No. 2 to 21.133(b) and (c) Eligibility –
Link between design and production organizations………………………………...171
GM 21.134 Application – Application form and manner…………………………..175
GM No. 1 to 21.139(a) Quality System…………………………………………….176
GM No. 2 to 21.139(a) Quality System –
Conformity of supplied parts or appliances………………………………………...176
GM 21.139(b)(1) Quality System – Elements of the quality system…………...…..177
GM No. 1 to 21.139(b)(2) Quality System –
Independent quality assurance function…………………………………………….178
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GM No. 2 to 21.139(b)(2) Quality System –
Adequacy of procedures and monitoring function………………………………….179
GM 21.143 Exposition – Production organisation exposition……………...……....179
GM 21.145(a) Approval Requirements…………………………………...………..179
GM 21.145(b)(2) Approval Requirements – Airworthiness,
noise, fuel venting and exhaust emissions /production data procedures…………...180
GM 21.145(c)(1) Approval Requirements – Accountable manager……………......180
GM 21.145(c)(2) Approval Requirements – Responsible managers…………….....181
AMC 21.145(d)(1) Approval Requirements – Certifying staff………………….....181
AMC 21.145(d)(2) Approval Requirements – Record of certifying staff……...…..182
AMC 21.145(d)(3) Approval requirements – Evidence of authorization…………..183
GM 21.147(a) Changes to the approved production organisation –
Significant changes…………………………………………………………………183
AMC 21.148 Changes of location –
Management during change of location……………………………….……………184
GM 21.149
Transferability………………………………………………………………………185
GM 21.151 Terms of approval – Scope and categories………………………….....185
AMC 21.153 Changes to the terms of approval –
Application for a change to the terms of approval………………………………….187
GM 21.157 Investigations – Arrangements…………………………………...……187
GM No. 1 to 21.158(a) Uncontrolled non-compliance with
applicable design data………………………………………………………………188
GM No. 2 to 21.158(a) Examples of level one findings………………….……..….188
GM 21.159(a)(3) Evidence of a lack of satisfactory control………………...……..188
AMC 21.163(c) Computer generated signature………………………..…………...189
AMC 21.163(d) Privileges – Maintenance…………………………………...…….190
AMC 21.163(e) Procedure to carry out a permit to fly
including evaluation of the flight conditions………………………………………191

GM 21.165(a) Obligations of the holder – Basic working document……..……….192
GM No. 1 to 21.165(c) Obligations of the holder –
Conformity of prototype models and test specimens……………………………….192
GM No. 2 to 21.165(c) Obligations of holder –
Conformity with type design…………………………………………………...…..192
GM No. 3 to 21.165(c) Obligations of the holder –
Condition for safe operation………………………………………………………..192
GM No. 4 to 21.165(c) Airworthiness Release or Conformity Certificate…………194
GM 21.165(d) and(h) Obligations of the holder –
Recording and archiving system……………………………………………………194

Subpart H – Airworthiness certificates . …………………………………………. ...197

Subpart I – Noise certificates…………………………………………………………198

Subpart JA – Design organisation approval . …………………………………….. .199
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GM 21.A231 Scope………………………………………………………………...199
GM No. 1 to 21.A239(a) Design assurance system………………………………...199
GM No. 2 to 21.A239(a) Design assurance system for
minor changes to type design or minor repairs to products………………………...204
AMC 21.A239(a)(3) Design assurance system –
Independent system monitoring…………………………………………………….204
AMC 21.A239(b) Design assurance system –
Independent checking function of the showing of compliance…………………….204
GM 21.A239(c) Design assurance system………………………………………….205
AMC No. 1 to 21.A243(a) Data requirements……………………………………...205
AMC No. 2 to 21.A243(a) Data requirements –
Model content of handbook for organisations
designing minor changes to type design or minor repairs to products……………..207
GM No. 1 to 21.A243(d) Statement of qualifications and experience …………….208
GM No. 2 to 21.A243(d) Data requirements - Statement of the
qualification and experience- Organisations designing minor
changes to type design or minor repairs to products……………………………….210
GM No. 1 to 21.A245 Requirements for approval…………………………………211
GM No. 2 to 21.A245 Requirements for approval – Organisations
designing minor changes to type design or minor repairs to products……………..212
GM 21.A247 Significant changes in the design assurance system…………………213
GM 21.A249 Transferability……………………………………………………….214
GM No. 1 to 21.A251 Terms of approval……………………………………….….214
GM No. 2 to 21.A251 Terms of approval - Organisations designing
minor changes to type design or minor repairs to products………………………...215
GM 21.A257(a) Investigations……………………………………………………..216
GM 21.A258(a)(1) Examples of level one findings………………………………..216
GM 21.A263(b) DOA privilege related to compliance documents…………….…..216
AMC 21.A263(b)(1) Compliance documents with conditions
related to engine or propeller without a type-certificate or
with unapproved changes and fitted on aircraft for which
a permit to fly is requested………………………………………………………….217
AMC No. 1 to 21.A263(c)(1) Procedure for the classification of
changes to type design and repairs as minor and major……………………………217
AMC No. 2 to 21.A263(c)(1) Privileges –
Organisations designing minor changes to type design
or minor repairs to products : classification procedure……………………………..219
AMC No. 1 to 21.A263(c)(2) Procedure for the approval of
minor changes to type design or minor repairs……………………………………..220
AMC No. 2 to 21.A263(c)(2) Privileges - Organisations designing
minor changes to type design or minor repairs to products :
procedure for the approval of minor changes to type design or minor
repairs……………………………………………………………………………….221
GM 21.A263(c)(3) Issue of information or instructions……………………………222

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GM 21.A263(c)(4) Procedure for the approval of
documentary changes to the Aircraft Flight Manual……………………………….224
AMC 21.A263(c)(6) Procedure for the approval of
the conditions for issue of a permit to fly…………………………………………..226
AMC 21.A 265(a) Administration of the Handbook……………………………….229
GM 21.A265(b) Use of the Handbook……………………………………………..229

Subpart JB- Design Organisation Approval
(Parts & Appliances).…………………………………………………………………230

GM 21.B231 Applicability…………………………………………………………230
GM 21.B233 Eligibility………………………………………………………….…230
GM 21.B239(a) Design assurance system……………………………….................231
GM 21.B239(c) Design assurance system………………………………………….233
AMC 21.B243 (a) Data requirements………………………………………............234
GM 21.B243(d) Statement of qualifications and experience.……………………...235
GM 21.B245 Requirements for approval……………………………………..……237
GM 21.B249 Transferability………………………………………………………..239
GM 21.B251 Terms of approval…………………………………………………....239
GM 21.B258 (a)(1) Examples of level one findings………………………………..239
AMC 21.B265(a) Administration of the Handbook
(Acceptable Means of Compliance)……………………………….……………….240
GM 21.B265(b) Use of the Handbook……………………………………………..241

Subpart K – Parts and appliances. …………………………………………………..242

AMC to 21.303(c) Standard Parts…………………………………………….….…242
GM 21.303(c) Officially recognised Standards………………………………….…242
GM 21.307 Release of Parts and Appliances for Installation…………………..…..243

Subpart L – Not applicable.. ………...……………………………………………….244

Subpart M - Repairs…………………………………………………………….…….245

GM 21.431(a) Scope…………………………………………………………...…...245
GM 21.431(d) Repairs to articles…………………………………………...………247
AMC 21.433 (a) and 21.447 Repair design and Record Keeping……………..…...247
GM 21.435(a) Classification of repairs………………………………………..…...248
GM 21.437 Issue of repair design approval…………………………………..….…250
GM 21.437(a) Issue of repair design approval……………………………...……...250
GM 21.439 Production of repair parts………………………………………..….…251
GM 21.441 Repair Embodiment……………………………………………...…….251
GM 21.443 Limitations……………………………………………………….….....251
GM 21.445 Unrepaired damage…………………………………………….…..…..252

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Subpart N – Not applicable …………...………………………………………….…..253

Subpart O – Indian Technical Standard Order Authorisations……………..…….254

AMC 21.602B(b)(2) Procedures for ITSO authorizations……………………..…..254
AMC 21.608 Declaration of Design and Performance………………………...…...255

Subpart P – Permit to Fly………………………………………………….…………257

GM 21.701(a) Permit to fly when certificate of airworthiness or
restricted certificate of airworthiness is not appropriate……………………………261
GM 21.701 Scope……………………………………………………..……………262
GM 21.703 Applicant for a permit to fly……………………………..…………….263
AMC 21.707 Application for a permit to fly………………………….……………263
GM 21.708(b)(6) Continuing airworthiness………………………………….…….265
GM No. 1 to 21.708(c) Safe flight………………………………………….………265
GM No. 2 to 21.708(c) Substantiations…………………………………………….265
GM 21.708(d) Control of aircraft configuration……………………………………265
AMC 21.709(b) Submission of documentation
supporting the establishment of flight conditions…………………………………..265
GM 21.710 Approval of flight conditions………………………………………….267
GM 21.711(d) Additional conditions and restrictions……………………...………267
GM 21.713 Changes………………………………………………………..………267
GM 21.719 Transfer of a permit to fly………………………………….………….267

Subpart Q – Identification of products, parts and appliances……………………..268
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TERMINOLOGY

For information purposes:

“Certification Specifications” (CS)/ “Federal Aviation regulations” (FAR) refers when
used in the text to the airworthiness codes and associated acceptable means of
compliance accepted by DGCA.

“Acceptable Means of Compliance” (AMC) illustrate a means, but not the only means,
by which a specification contained in an airworthiness code or a requirement in an
implementing rule can be met.

“Guidance Material” (GM) helps to illustrate the meaning of a specification or
requirement.

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Subpart A - General

GM 21.3(a)
The system for collection, investigation and analysis of data

In the context of that requirement the word “Collection” means, the setting up, of systems
and procedures which will enable relevant malfunctions, failures and defects to be
properly reported when they occur.

GM 21.3(b)
Occurrence reporting

For occurrence reporting, refer the following AMC

AMC 20-8
Occurrence Reporting

1. INTENT

This AMC is interpretative material and provides guidance in order to determine which
occurrences should be reported to DGCA and to other organisations, and it provides
guidance on the timescale for submission of such reports.

It also describes the objective of the overall occurrence reporting system including
internal and external functions

2. APPLICABILITY

(a) This AMC only applies to occurrence reporting by persons/organisations regulated by
DGCA. It does not address reporting by aerodrome organisations, air navigation
service providers and authorities themselves.

(b) In most cases the obligation to report is on the holders of a certificate or approval,
which in most cases are organisations, but in some cases can be a single person. In
addition some reporting requirements are directed to persons. However, in order not
to complicate the text, only the term ‘organisation’ is used.

(c) The AMC also does not apply to dangerous goods reporting. The definition of
reportable dangerous goods occurrences is different from the other occurrences and
the reporting system is also separate. This subject is covered in specific operating
requirements and guidance and ICAO Documents namely:

(i) ICAO Annex 18, The Safe Transport of Dangerous Goods by Air, Chapter 12
(ii) ICAO Doc 9284-AN/905, Technical Instructions for the Safe Transport of
Dangerous Goods by Air

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