U.S. Department

of Transportation

Federal Aviation

Administration

Advisory 

Circular

Subject: Production Under 14 CFR Part 21, 

Subparts F, G, K, and O

Date: 10/01/15

Initiated By: AIR-112

AC No: 21-43A

This advisory circular (AC) provides information for production approval holders (PAH) 

pursuant to Title 14 of the Code of Federal Regulations (14 CFR) part 21, Certification 

Procedures for Products and Articles. This AC provides PAHs and applicants for a production 

approval with guidance for developing and maintaining a production system that is appropriate 

to the PAH’s operations and complies with the regulations.

Susan J. M. Cabler

Acting Manager, Design, Manufacturing, & 

Airworthiness Division

Aircraft Certification Service
10/01/15 AC 21-43A

CONTENTS

Paragraph Page

ii

CHAPTER 1. General Information. ........................................................................................... 1-1

1.1 Purpose of This Advisory Circular. .............................................................................. 1-1

1.2 Audience. ...................................................................................................................... 1-1

1.3 Effective Date. .............................................................................................................. 1-1

1.4 Cancellation. ................................................................................................................. 1-1

1.5 Explanation of Changes. ............................................................................................... 1-1

1.6 Where to Find This AC................................................................................................. 1-2

1.7 Applicability. ................................................................................................................ 1-2

1.8 Eligibility. ..................................................................................................................... 1-2

1.9 Application.................................................................................................................... 1-2

1.10 Organization Requirements. ......................................................................................... 1-3

CHAPTER 2. Quality System. ................................................................................................... 2-1

2.1 Purpose.......................................................................................................................... 2-1

2.2 Background................................................................................................................... 2-1

2.3 Design Data Control. .................................................................................................... 2-1

2.4 Document Control......................................................................................................... 2-1

2.5 Supplier Control............................................................................................................ 2-2

2.6 Manufacturing Process Control. ................................................................................... 2-2

2.7 Inspection and Testing. ................................................................................................. 2-4

2.8 Inspection, Measuring, and Test Equipment Control. .................................................. 2-5

2.9 Inspection and Test Status. ........................................................................................... 2-6

2.10 Nonconforming Product and Article Control. .............................................................. 2-6

2.11 Corrective and Preventive Actions. .............................................................................. 2-7

2.12 Handling and Storage.................................................................................................... 2-8

2.13 Control of Quality Records........................................................................................... 2-8

2.14 Internal Audits. ............................................................................................................. 2-9

2.15 In-Service Feedback...................................................................................................... 2-9

2.16 Quality Escapes........................................................................................................... 2-10

2.17 Issuing Authorized Release Documents. .................................................................... 2-10
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CONTENTS (CONTINUED)

Paragraph Page

iii

CHAPTER 3. Supplier Control Program. .................................................................................. 3-1

3.1 Purpose.......................................................................................................................... 3-1

3.2 Background................................................................................................................... 3-1

3.3 Supplier Control............................................................................................................ 3-1

3.4 Use of Suppliers in Other Countries. ............................................................................ 3-1

3.5 FAA Surveillance of Supplier Control Systems. .......................................................... 3-1

3.6 Elements of a Supplier Control System. ....................................................................... 3-2

CHAPTER 4. Electronic Records. ............................................................................................. 4-1

4.1 Purpose.......................................................................................................................... 4-1

4.2 Background................................................................................................................... 4-1

4.3 Electronic Manufacturing and Quality System Records............................................... 4-1

4.4 Information Management System Facility Management.............................................. 4-6

4.5 Training......................................................................................................................... 4-6

CHAPTER 5. Internal Audit Program. ...................................................................................... 5-1

5.1 Purpose.......................................................................................................................... 5-1

5.2 Background................................................................................................................... 5-1

5.3 Types of Internal Audit Programs................................................................................. 5-1

5.4 Elements of an Internal Audit Program. ....................................................................... 5-1

CHAPTER 6. Additional PAH Requirements. .......................................................................... 6-1

6.1 Quality Manual. ............................................................................................................ 6-1

6.2 Location of or Change to Manufacturing Facilities...................................................... 6-1

6.3 Inspections and Tests. ................................................................................................... 6-1

6.4 Issuance of a Production Approval. .............................................................................. 6-2

6.5 Production Limitation Record....................................................................................... 6-2

6.6 Duration. ....................................................................................................................... 6-2

6.7 Transferability............................................................................................................... 6-2

6.8 Privileges....................................................................................................................... 6-3

6.9 Responsibility of Holder............................................................................................... 6-3

6.10 Amendment of Production Certificates. ....................................................................... 6-4

6.11 Approval for Deviation. ................................................................................................ 6-5
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CONTENTS (CONTINUED)

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6.12 Design Changes. ........................................................................................................... 6-5

6.13 Changes in Quality System........................................................................................... 6-5

6.14 Issuance of Letters of TSO Design Approval: Import Articles. ................................... 6-6

Appendix A. Related Publications.............................................................................................. A-1

Appendix B. Definitions. .............................................................................................................B-1

Appendix C. Production Under Type Certificate. .......................................................................C-1

Appendix D. Scrap or Salvageable Aircraft Products and Articles. ........................................... D-1

Appendix E. Issuing Authorized Release Documents for Aircraft Engines, Propellers, and 

Articles...................................................................................................................................E-1

Appendix F. Production Approval Holder/Supplier Arrangement. .............................................F-1

Appendix G. Production Certification: Multinational/Multicorporate Consortia...................... G-1

Appendix H. Advisory Circular Feedback Form........................................................................ H-1
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1-1

CHAPTER 1. GENERAL INFORMATION.

1.1 Purpose of This Advisory Circular.

1.1.1 This advisory circular (AC) provides information for PAHs pursuant to 14 CFR part 21, 

Certification Procedures for Products and Articles. This AC addresses the 

manufacturing and production requirements pursuant to part 21, subpart F, Production 

Under Type Certificate; subpart G, Production Certificates; subpart K, Parts 

Manufacturer Approvals; and subpart O, Technical Standard Order Approvals.

1.1.2 This AC provides information on how an applicant for a production approval should 

develop and maintain its quality systems (for this AC, an applicant for a production 

approval, and a production approval holder are both collectively referred to as a PAH).

This AC also provides guidance to PAHs on the development and maintenance of a 

production system that meets the needs of the PAH and complies with FAA regulations.

1.1.3 This AC is not mandatory and does not constitute a regulation. This AC describes an 

acceptable means, but not the only means, to comply with these requirements. However, 

if you use the means described in the AC, you must follow it in all important respects.

1.2 Audience.

This AC affects applicants for a production approval or current PAH developing and 

maintaining a production system pursuant to the provisions of 14 CFR, part 21, 

subparts F, G, K and O.

1.3 Effective Date.

This AC is effective 10/01/2015.

1.4 Cancellation.

This AC cancels, as of its effective date, AC 21-43, dated 10/16/2009.

1.5 Explanation of Changes.

This revision supersedes AC 21-43, dated 10/16/2009 and has been updated to reflect 

amendment 21-98 to 14 CFR part 21. This revision explains recent regulatory 

changes that:

 Require a PAH to identify an accountable manager.

 Allow a PAH to issue authorized release documents for aircraft engines, propellers, 

and articles.

 Permit a production certificate holder to manufacture and install interface 

components.
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 Require a PAH to ensure supplier-provided products, articles, or services conform 

to the PAH’s requirements and establish a supplier-reporting process for 

nonconforming products, articles, or services released from or provided by 

a supplier. 

1.6 Where to Find This AC. 

 You may find this AC and other related documents at 

http://www.faa.gov/regulations_policies/orders_notices/.

 If you have any suggestions for improvements or changes to this AC, you may use 

the template provided in Appendix H of this AC.

1.7 Applicability. 

Sections 21.131, 21.301, and 21.601 prescribe the procedural requirements for issuing 

production approvals (that is, production certificates (PC), parts manufacturer approvals 

(PMA), and technical standard order (TSO) approvals) and the rules governing the 

holders of those production approvals. Section 21.601 also includes procedural 

requirements for issuing letters of TSO design approval.

Note: Type certificate holders producing under subpart F should review appendix C

to this AC for additional information.

1.8 Eligibility.

Section 21.132, Eligibility, prescribes eligibility requirements for a production 

certificate. Applicants for a production certificate are required by the rule to hold the 

following for the product concerned:

 A current type certificate (TC), 

 A supplemental type certificate (STC), or

 Rights to the benefits of that TC or STC under a licensing agreement.

1.9 Application.

Sections 21.133, 21.303, and 21.603 require an applicant for a production approval to

apply in a form and manner prescribed by the Federal Aviation Administration (FAA). 

Sections 21.303 and 21.603 contain additional requirements that require the applicant 

to provide additional information with the application. Applicants should refer to the 

applicable section for requirements pertaining to the type of production approval 

they seek.

1.9.1 For a PC, an applicant will submit FAA Form 8110-12, Application for 

Type Certificate, Production Certificate, or Supplemental Type Certificate. This form is

submitted to the Manager, Manufacturing Inspection Office (MIO), in the directorate 

in which the applicant’s principal manufacturing facility is located. An applicant for an 

amendment to a production limitation record (PLR) should also submit its application to 
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a MIO, unless the applicant has been previously notified to submit the application to 

their Manufacturing Inspection District Office (MIDO) or Certificate Management 

Office (CMO).

1.9.2 For a PMA:

 If an applicant is applying based on identicality or test and computation, the 

applicant will submit a letter of application to the Aircraft Certification Office 

(ACO) in the geographical area in which the applicant’s manufacturing facility is 

located.

 If the applicant is applying based on a licensing agreement, the applicant will submit 

a letter of application to the MIDO in the geographical area in which the applicant’s 

manufacturing facility is located.

1.9.3 For a TSO authorization, an applicant will submit a letter of application to the ACO in 

the region in which the applicant’s principal manufacturing facility is located.

1.10 Organization Requirements.

Sections 21.135, 21.305, and 21.605 require each PAH to provide the FAA with a document 

describing how its organization will ensure compliance with the provisions of the applicable 

subpart. This document must describe assigned responsibilities, delegated authorities, and the 

functional relationship of those responsible for quality with management and other 

organizational components. The document must also identify the applicant’s or PAH’s 

accountable manager.

1.10.1 The FAA recognizes that businesses have varying business models and organizational 

structures. The intent of the organization requirement is to obtain a commitment from 

top management to—

 Establish a quality system that complies with the provisions of the applicable 

subpart and ensures each product and article conforms to its approved design and is 

in a condition for safe operation,

 Continually improve that quality system, 

 Establish a primary point of contact between a PAH and the FAA, and

 Describe how the PAH will report failures, malfunctions, or defects to the FAA, 

in accordance with § 21.3. 

1.10.2 Accountable Manager.

In addition to serving as a PAH’s primary contact with the FAA, the accountable 

manager is responsible within an applicant’s or PAH’s organization for, and has

authority over, all production operations conducted under part 21. In addition, an 

accountable manager confirms that all quality manual procedures are in place and that 

the PAH satisfies the requirements of subchapter C, Aircraft. The accountable manager 

may delegate functions and identify alternate points of contact. Any such delegations 

should be noted in an applicant’s or PAH’s organization document.
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CHAPTER 2. QUALITY SYSTEM.

2.1 Purpose.

This chapter provides information and describes criteria for establishing and

maintaining a quality system. PAHs may use this document in support of their 

responsibilities pursuant to §§ 21.137, 21.307, and 21.607.

2.2 Background.

Section 21.137 requires each PAH to establish and describe, in writing, a quality system 

that ensures each product and article conforms to its approved design and is in a 

condition for safe operation. The intent is for each PAH to develop a quality system 

that meets both the needs of the PAH and the rule. As such, PAH quality systems are 

scalable to the size and complexity of the product or article being produced. The quality 

system requirements contain the following 15 elements outlined in paragraphs 2.3

through 2.17 below.

2.3 Design Data Control.

Section 21.137(a) requires procedures for controlling design data, and subsequent 

changes, to ensure only current, correct, and approved data are used.

2.3.1 Procedures.

PAHs are required by the rule to have procedures for design data control. These 

procedures should ensure proper storage, maintenance, and protection of design data.

In addition, PAHs should ensure design data is identified, controlled, and made 

available to those persons who require them. There should also be procedures for 

approving, documenting, and controlling changes to the design data.

2.3.2 Design Changes.

Design, manufacturing, and special process changes should be approved in a manner 

acceptable to the FAA. Design changes necessary to correct unsafe conditions should be 

incorporated into the FAA-approved design. In accordance with § 21.50(b), Instructions 

for Continued Airworthiness (ICA) should be kept current with the design changes.

2.4 Document Control.

Section 21.137(b) requires procedures for controlling quality system documents and 

data, and subsequent changes, to ensure only current, correct, and approved documents 

and data are used.

2.4.1 Procedures.

PAHs should have procedures to ensure proper storage, maintenance, and protection of 

documents and data, as required by § 21.137(k). Additionally, PAHs should ensure 

quality system documents and data, including all tags and forms, are identified, 

controlled, and made available to those persons who require them.
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2.4.2 Document and Data Changes.

There should be procedures for documenting, approving, and controlling changes to the 

quality system documents and data.

2.4.3 Electronic Storage.

PAHs may choose to store documents electronically, as long as printed copies are made 

available on FAA request.

2.5 Supplier Control.

Section 21.1(b)(10) defines a supplier as a person at any tier in the supply chain who 

provides a product, article, or service that is used or consumed in the design or 

manufacture of, or installed on, a product or article. Section 21.137(c) requires 

procedures for ensuring each supplier-provided product, article, or service conforms to 

the PAH’s requirements. This section also requires a PAH to establish a supplier 

reporting process for products, articles, or services that have been released from or 

provided by a supplier and subsequently found not to conform to the PAH’s 

requirements.

2.5.1 Procedures.

Refer to chapter 3 of this AC for additional information on what procedures a typical 

supplier control program should contain. 

2.5.2 PAH Responsibilities.

The PAH is ultimately responsible for determining that all products and articles 

conform to their approved type design and are in a condition for safe operation. This 

responsibility cannot be delegated to, or relieved by the use of, approved suppliers, risk 

and revenue sharing partners, co-producers, or other service or manufacturing 

providers.

2.6 Manufacturing Process Control.

Section 21.137(d) requires procedures for controlling manufacturing processes to ensure 

each product and article conforms to its approved design.

2.6.1 Manufacturing Processes.

PAHs should have procedures for ensuring all manufacturing processes (including 

special processes) that have been identified and defined by FAA-approved design data 

are accounted for in the manufacturing process.

2.6.2 Work Instructions and Revisions.

PAHs should ensure work instructions, and revisions to work instructions, are reviewed, 

approved, controlled, documented, and made available to those persons who require 

them.
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2.6.3 Changed Processes.

Appropriate personnel should substantiate and approve any new or changed processes.

2.6.4 Traceability.

Traceability should be maintained throughout the manufacturing process from raw 

material to completed product or article. Articles introduced into production before full 

acceptance should have a process for identifying, controlling, and segregating them. 

2.6.5 Software Use.

2.6.5.1 Airborne and production software present unique challenges in 

manufacturing process control. PAHs that develop airborne software may 

obtain additional guidance from the Society of Automotive Engineers 

(SAE), Aerospace Standard (AS) 9006, Deliverable Aerospace Software 

Supplement for AS9100A.

2.6.5.2 PAHs that use production software for the design, manufacture, inspection, 

test, acceptance, or calibration of a deliverable product or article may obtain 

additional guidance from SAE, Aerospace Recommended Practice (ARP) 

9005, Aerospace Guidance for Non-Deliverable Software.

2.6.5.3 Procedures may allow for emergency, non-routine use of non-released 

software in the acceptance process. These procedures should provide a 

means of locating and recalling the product that was manufactured, 

inspected, or tested by non-released software when necessary.

2.6.5.4 If non-released software is used for product or article acceptance, the 

product or article should be identified as nonconforming until the software 

used is approved and released. Each product or article affected should be 

identified by an individually unique serial number to ensure recall if 

necessary. The product or article should not be shipped until all acceptance 

software has been released, unless an FAA-approved alternate means of 

acceptance is used. A recall system is not considered an acceptable alternate 

means of product acceptance for shipment of products or articles.

2.6.6 Software Quality Assurance.

The functional responsibilities for software quality assurance should be part of the 

quality assurance system submitted to the FAA. The organization responsible for 

software quality assurance should have functional independence to allow objective 

evaluations. The organization responsible for software quality assurance should have 

authority and responsibility to identify and evaluate problems and ensure completion of 

corrective action on deficiencies. In addition, this organization should—

 Ensure all software tasks are clearly and adequately described in 

documented procedures. 
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 Verify suppliers that use computer-aided-manufacturing (CAM), computer-aidedinspection (CAI), or computer-aided-testing (CAT) software and related digital

input/output data for product or article acceptance implement appropriate controls.

 Have final authority for formally releasing software and related digital input/output 

data used for product or article acceptance. 

 Ensure corrective action has been taken on any deficiencies previously discovered.

2.7 Inspection and Testing.

Section 21.137(e) requires procedures for inspections and tests used to ensure each 

product and article conforms to its approved design. These procedures are required by 

the rule to include the following, as applicable, a flight test of each aircraft produced 

unless that aircraft will be exported as an unassembled aircraft, and a functional test of 

each aircraft engine and each propeller produced.

2.7.1 Inspection Procedures.

PAHs should have procedures documenting inspection methods for each product or 

article to ensure they conform to their FAA-approved design data. Procedures should 

include methods that ensure identification of inspection status throughout the 

manufacturing process and storage. In addition, procedures should ensure inspectionmarking devices are controlled and only issued to authorized persons.

2.7.2 Testing Procedures.

PAHs should establish, maintain, and control test procedures, instructions,

and subsequent changes. PAHs should ensure the appropriate organizations participate 

in reviewing test instructions or procedures. Products or articles that have been adjusted 

or reworked after test acceptance (such that the results of that testing could be affected) 

should be retested using approved processes.

2.7.3 Statistical Processes.

2.7.3.1 PAHs should document the use of statistical processes in the quality 

manual. Statistical processes will ensure that criteria for acceptance or 

rejection prevent the acceptance of nonconforming products or articles.

2.7.3.2 Statistical sampling should include sampling plans appropriate for the 

type of product or article being accepted. Personnel should be trained in 

statistical sampling techniques.

2.7.3.3 Engineering and manufacturing organizations should participate in the 

review, implementation, and maintenance of statistical quality/process 

control techniques used for product or article acceptance. PAHs may use 

SAE ARP9013, Statistical Product Acceptance Requirements, which sets

forth general requirements for implementing any of the following statistical 

product acceptance methods: 
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 SAE ARP9013/1, Statistical Product Acceptance Requirements Using 

Isolated Lot Sampling Methods;

 SAE ARP9013/2, Statistical Product Acceptance Requirements Using 

Attribute or Variable Lot Acceptance Sampling Plans;

 SAE ARP9013/3, Statistical Product Acceptance Requirements Using 

Process Control Methods; or

 SAE ARP9013/4, Statistical Product Acceptance Requirements Using 

Continuous Sampling, Skip-Lot Sampling, or Methods for Special 

Cases.

Note: SAE ARP9013 does not apply to statistical methods that are separate 

from product acceptance. Many companies use statistical methods solely 

to monitor and improve their product quality, and those methods are not 

subject to the requirements of this document. This document series applies 

only to those statistical methods used for product acceptance. 

2.7.4 Nondestructive Testing.

PAHs using nondestructive testing to verify conformity of products or articles should 

have procedures addressing acceptance and rejection criteria. Adequate test pieces with 

known defects should be available to nondestructive inspection (NDI) personnel. 

PAHs should also have procedures addressing the certification, recertification, and 

decertification of nondestructive testing personnel. PAHs may choose to use National 

Aerospace Standard (NAS) 410, NAS Certification and Qualification of Nondestructive 

Test Personnel (issued February 2003).

2.7.5 Flight Test Procedures.

PAHs that manufacture a complete aircraft should ensure flight test procedures and

subsequent changes are submitted to and approved by the FAA. Flight test pilots should 

be fully qualified, and flight check-off lists should be properly completed.

2.8 Inspection, Measuring, and Test Equipment Control.

Section 21.137(f) requires procedures to ensure calibration and control of all inspection, 

measuring, and test equipment used in determining conformity of each product and 

article to its approved design. Each calibration standard is required by the rule to be 

traceable to a standard acceptable to the FAA.

2.8.1 Approval, Inspection, and Calibration Procedures.

PAHs should have procedures ensuring tools, gages, and equipment are approved, 

periodically inspected, and calibrated. Standards used for calibration should have 

adequate accuracy and be traceable to a standard acceptable to the FAA. Any equipment 

required for special processing, such as tools, gages, instruments, and timers should be 

available and calibrated. Calibration of thread gages presents unique challenges. The 

Industrial Fasteners Institute standard IFI-301, Gage Calibration Requirements and 

Procedures for Thread Gages, is an industry standard that has been reviewed by the 
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FAA and found acceptable to provide guidance for initial and subsequent calibration 

of thread gages.

2.8.2 Tool Control Procedures.

PAHs should have a tool control procedure ensuring tools and gages used for product or 

article acceptance (including NDI equipment) are protected, maintained, and used in an 

acceptable environment. Procedures should ensure PAHs conduct an evaluation and 

take necessary corrective action when a product or article has been accepted by an 

out-of-tolerance gage.

2.9 Inspection and Test Status.

Section 21.137(g) requires procedures for documenting the inspection and test status of 

products and articles supplied or manufactured to the approved design.

2.9.1 Procedures.

PAHs should have procedures that define how inspection and test records are generated 

and maintained. PAHs should ensure supplier-furnished articles or services conform to 

the purchase order requirements, as applicable. Records of this verification should be 

generated and maintained.

2.9.2 Inspection.

The PAH should ensure the inspection status of production products or articles are 

identifiable throughout the manufacturing cycle including any storage facility controlled 

by the PAH. In addition, the PAH is responsible for generating and maintaining records 

of completed tests for aircraft, aircraft engines, or propellers.

2.10 Nonconforming Product and Article Control.

Section 21.137(h) requires procedures to ensure only products or articles that conform 

to their approved design are installed on a type-certificated product. These procedures 

are required by the rule to provide for the identification, documentation, evaluation, 

segregation, and disposition of nonconforming products and articles. Only authorized 

individuals may make disposition determinations. Section 21.137(h) also requires 

procedures to ensure discarded articles are rendered unusable.

2.10.1 Procedures.

PAHs should have procedures that ensure a material review board (MRB) is 

established, documented, and operational. PAHs should have procedures that include 

how nonconforming products or articles are identified, controlled, and dispositioned.

2.10.2 Disposition Determinations.

Authorized individuals should review nonconforming material to determine if 

acceptance of the nonconformance constitutes a major or minor change to 

FAA-approved data. The FAA, through the design approval process, will approve 

any MRB disposition identified as a major change.
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2.10.3 Data Analysis.

Senior management should review and analyze nonconforming material data to detect 

adverse trends and determine appropriate levels of corrective and preventive actions.

2.10.4 Disposition of Scrap and Salvageable Aircraft Products and Articles.

These products and articles should be disposed of in an acceptable manner. Appendix D

to this AC provides additional information on controlling and dispositioning scrap and 

salvageable aircraft products and articles.

2.11 Corrective and Preventive Actions.

Section 21.137(i) requires procedures for implementing corrective and preventive 

actions to eliminate the causes of an actual or potential nonconformity to the approved 

design or noncompliance with the approved quality system.

2.11.1 Corrective Action.

PAHs are required by the rule to have procedures to eliminate the cause(s) of known 

nonconformities or noncompliances to prevent recurrence. Corrective actions should be 

appropriate to the effects of the nonconformities or noncompliances encountered and 

address the following:

 Review of nonconformities or noncompliances;

 Identification of the cause(s) of nonconformities or noncompliances;

 Evaluation of the need for action to ensure that nonconformities or noncompliances

do not reoccur;

 Identification and implementation of action(s) needed;

 Recording of the results of action(s) taken;

 Review of corrective action(s) taken; and

 Flow-down of the corrective action requirement to a supplier, when it is determined 

that the supplier is responsible for the nonconformities or noncompliances.

2.11.2 Preventive Action.

PAHs are required by the rule to have procedures to eliminate the cause(s) of potential 

nonconformities or noncompliances to prevent their occurrence. Preventive actions 

should be appropriate to the effects of the potential problems and should address 

the following:

 Identification of potential nonconformities/noncompliances and their causes;

 Evaluation of the need for action to prevent occurrence of 

nonconformities/noncompliances;

 Identification and implementation of action(s) needed;
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 Recording of results of action(s) taken; and

 Review of preventive action(s) taken.

2.11.3 Monitoring of Actions.

When processes or procedures result in nonconforming products or articles, PAHs 

should monitor the response to, implementation of, and effectiveness of corrective 

and preventive actions. 

2.12 Handling and Storage.

Section 21.137(j) requires procedures to prevent damage and deterioration of each 

product and article during handling, storage, preservation, and packaging.

2.12.1 Procedures.

PAHs should have procedures to ensure only conforming and properly identified 

products or articles are placed in storage. These procedures should also ensure 

traceability for split lots, and control of the removal or issuance of those products 

or articles.

2.12.2 Storage, Handling, Manufacturing, and Assembly.

PAHs are responsible for the following:

 Having procedures to ensure compliance with any special environmental controls 

during material storage, handling, manufacturing, and assembly of products 

or articles.

 Identifying and controlling shelf life or environmentally sensitive products or 

articles.

 Properly separating and identifying products or articles in storage and 

manufacturing areas.

2.13 Control of Quality Records.

Section 21.137(k) requires the PAH’s quality system to have procedures for identifying, 

storing, protecting, retrieving, and retaining quality records. The same section also 

requires a PAH to retain these records for at least 5 years for the products and articles 

manufactured under the approval, and at least 10 years for critical components 

identified pursuant to § 45.15(c).

2.13.1 Procedures.

2.13.1.1 PAHs should have procedures that account for all records generated, or 

needed, to show compliance to the applicable requirement of subparts G, 

K, and O, including records generated throughout the supply chain. 

Additionally, the PAH is responsible for controlling record storage facilities 

to ensure both against degradation of records and the availability of 

these records.
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2.13.1.2 Records to be retained should include, but are not limited to, inspection and 

test records, calibration records, supplier records, special process 

certifications, MRB records, and production travelers.

2.13.1.3 Records should be legible, complete, and accurate. Any storage media used 

for record retention should exhibit legible data, acceptance stamps, and 

required signatures. Refer to chapter 4 of this AC for additional guidance on 

computer-generated or stored records.

2.13.2 Record Retention Schedule.

PAHs should establish a record retention schedule for various types of process, test, and 

quality and inspection system data.

2.13.3 Record Disposition.

The procedures should define how obsolete records will be dispositioned or destroyed.

2.14 Internal Audits.

Section 21.137(l) requires procedures for planning, conducting, and documenting 

internal audits to ensure compliance with the approved quality system. The procedures 

are required by the rule to include reporting results of internal audits to the manager 

responsible for implementing corrective and preventive actions. Chapter 5 of this AC 

provides additional information on internal audit programs.

2.14.1 Procedures.

PAHs should have procedures that establish an internal audit program. The internal 

audit program should verify compliance with established policies, procedures, and 

approved data.

2.14.2 Reporting.

PAHs should ensure the results of internal audits are reported to the appropriate level of 

management, and that audits are used for improving the quality system or product.

2.15 In-Service Feedback.

Section 21.137(m) requires procedures for receiving and processing feedback on 

in-service failures, malfunctions, and defects. These procedures are required by the 

rule to include a process to assist design approval holders to address any in-service 

problem(s) involving design changes and determine if any changes to the Instructions 

for Continued Airworthiness (ICA) are necessary.

2.15.1 Procedures.

PAHs should have procedures that establish a system for receiving, processing, and 

tracking of in-service failures, including how records are generated and maintained.
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2.15.2 Corrective Actions.

PAHs should ensure that service problems, unairworthy conditions, unsafe features, and 

unsafe characteristics reported by the FAA, or users, are investigated and receive 

prompt corrective action.

2.15.3 Service Bulletins and Maintenance Manuals.

PAHs should ensure service bulletins and changes to maintenance manuals are 

approved by authorized personnel and coordinated with FAA engineering.

2.16 Quality Escapes.

Section 21.137(n) requires procedures for identifying, analyzing, and initiating 

appropriate corrective action for products or articles that have been released from the 

quality system and that do not conform to the applicable design data or quality system 

requirements.

2.16.1 Procedures.

PAHs should have procedures that document how they will track, evaluate, categorize, 

and disposition all nonconforming products or articles. These procedures should include 

actions to correct deficiencies in the quality system that allowed the quality escape.

2.16.2 Analytical Tools.

PAHs should use trend analysis and risk assessment tools to determine the severity of,

and long-term effects of, nonconformances.

2.16.3 Recalls.

A PAH should notify users of products or articles when those products or articles are 

recalled for suspected or known nonconformance.

2.17 Issuing Authorized Release Documents.

Any PAH that intends to issue authorized release documents must have procedures for

doing so that meet the requirements of § 21.137(o). This rule requires a PAH to have 

procedures providing for the selection, appointment, training, management, and 

removal of individuals authorized by the PAH to issue authorized release documents.

A PAH may issue these documents for new aircraft engines, propellers, and articles it

manufactures, and for used aircraft engines, propellers, and articles rebuilt or altered 

pursuant to § 43.3(j). When a PAH uses an authorized release document for export 

purposes, the PAH must comply with any applicable bilateral agreement. Furthermore, 

under § 21.137(o), a PAH must comply with the rules applicable to the export of new 

and used aircraft engines, propellers, and articles, specified in § 21.331, and the 

responsibilities of exporters, specified in § 21.335. Additional guidance on exports can 

be found in AC 21-2, Complying with the Requirements of Importing Countries or 

Jurisdictions When Exporting U.S. Products, Articles, or Parts, and AC 21-44, Issuance 

of Export Airworthiness Approvals Under 14 CFR Part 21 Subpart L.
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2.17.1 Procedures.

Procedures established under § 21.137(o) must ensure that only qualified personnel 

issue authorized release documents. A PAH’s evaluation of these individuals’ 

qualifications should include an assessment of their knowledge, background,

experience, and training. Qualifications should be commensurate with the complexity 

and type of product or article for which the PAH issues an authorized release document.

These procedures should also include requirements for completing FAA Form 8130-3 

that meet chapters 1, 2, and 4 of FAA Order 8130.21, Procedures for Completion and 

Use of the Authorized Release Certificate, Airworthiness Approval Tag. Refer to 

appendix E to this AC for additional guidance on issuing authorized release documents 

for aircraft engines, propellers, and articles.

2.17.2 FAA Form 8130-3.

A PAH’s authorized personnel should issue authorized release documents using 

FAA Form 8130-3.

2.17.3 Conditional Requirement.

Section 21.137(o) is only applicable to a PAH that wants to issue an authorized release 

document. Any PAH not issuing an authorized release document may continue to obtain 

airworthiness approvals from the FAA.
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CHAPTER 3. SUPPLIER CONTROL PROGRAM.

3.1 Purpose.

This chapter provides information on, and describes criteria for, establishing and 

maintaining a supplier control program. PAHs may use this document in support of 

their responsibilities under §§ 21.137, 21.307, and 21.607.

3.2 Background.

Part 21 requires PAHs to establish and maintain a quality system. Part 21 also requires 

that this quality system ensure supplier-produced components (for example, software, 

articles, and subassemblies), services (for example, special processes and calibration), 

and customer or buyer-furnished equipment or material conform to the PAH’s 

requirements.

3.3 Supplier Control.

3.3.1 Contract Requirements.

A PAH is required by § 21.137(c) to have a quality system that ensures all products or 

articles provided by its suppliers, including subtier suppliers, conform to the PAH’s

requirements. The PAH’s requirements will depend on the complexity of supplied 

products or articles and whether or not the supplier holds a production approval for 

similar products or articles.

3.3.2 PAH Responsibilities.

The PAH should ensure access to, and cooperation of, all involved facilities in the 

supply chain for the PAH and the FAA. The PAH is responsible for supplier adherence 

to the requirements flowed-down through the supply chain. A PAH does not delegate 

responsibility under its production approval to a supplier. 

3.4 Use of Suppliers in Other Countries.

A PAH may use suppliers in other countries when the PAH has established and 

implemented a supplier control system acceptable to the FAA. A PAH that plans to use 

a supplier in another country should notify the FAA as soon as possible to determine the 

FAA’s ability to perform surveillance.

3.5 FAA Surveillance of Supplier Control Systems.

The FAA does not approve suppliers, but may conduct surveillance of the supplier 

control system at both PAH and supplier facilities in accordance with FAA Order 

8120.23, Certificate Management of Production Approval Holders. The FAA may also 

request technical assistance from a bilateral partner civil aviation authority (CAA) to act 

on behalf of the FAA. The PAH cannot rely on FAA or CAA surveillance as a means of 

supplier control.
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3.6 Elements of a Supplier Control System.

A PAH is responsible for ensuring that each product or article conforms to the

FAA-approved design data, and is in a condition for safe operation. This responsibility 

remains the same whether the PAH produces the entire product or article at its facility, 

or uses suppliers to furnish related articles. The supplier control program is required by 

the rule to be FAA-approved and defined in a manual. Implementation and maintenance 

of the supplier control system is subject to evaluation by the FAA. FAA production 

approvals are based on the ability of the quality system to ensure production of 

conforming products or articles. Therefore, the supplier control system should contain 

procedures that include the following:

3.6.1 Organizational Structure.

Establishment of an organizational structure that ensures appropriate authority, 

sufficient resources, and adequate expertise to control supplier activities.

3.6.2 Supplier Arrangement.

Documentation of the supplier arrangement, generally through a contract, that defines 

all necessary elements and procedures between the PAH and a supplier. Appendix F to 

this AC contains elements that should be defined in the arrangement between the PAH 

and the supplier.

3.6.3 Supplier Evaluation and Selection.

A process that evaluates and selects suppliers based on their capability to perform all 

manufacturing activities, inspections, and tests necessary to determine conformity of 

articles to the applicable design data. Additionally, the supplier evaluation and selection 

process should determine the supplier’s ability to meet other PAH specified 

requirements. The process should include criteria for the initial evaluation, selection, 

periodic or ongoing evaluations, and disapproval of suppliers. These should include 

the following:

3.6.3.1 Initial evaluation of suppliers to determine their capability to meet 

requirements. The PAH should make this determination before permitting 

the supplier to furnish any articles. The need for the PAH to conduct onsite 

evaluations should be based on a supplier control process as described in 

paragraph 3.6.5 of this AC. The FAA strongly encourages PAHs to conduct 

initial onsite evaluations based on risk factors such as:

 Category of the part as listed on the FAA’s Aircraft Certification 

Service Category Parts List (available on the FAA website);

 Number of supplier tiers, and number of suppliers within each tier, used 

by the supplier (including, if necessary, onsite evaluations of subtier

suppliers);

 Design and manufacturing complexity of the article;

 Ability of the PAH to inspect the article on receipt; and

 Other risk factors as discussed in paragraph 3.6.5.1 of this AC.
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3.6.3.2 Periodic or ongoing evaluations of suppliers to ensure their continued 

adherence to the requirements.

3.6.3.3 Methods for determining the extent and type of evaluations (for example, 

onsite evaluations, process reviews, document reviews, or independent 

product evaluations). The extent and type of evaluations should be based 

on the type, complexity, method of control, and criticality of the articles 

procured. The need for the PAH to conduct onsite evaluations should be 

based on a supplier control process and verification of supplier product as 

described in paragraphs 3.6.5 and 3.6.6 of this AC. The FAA strongly 

encourages PAHs to conduct periodic/ongoing onsite evaluations.

3.6.4 Approved Supplier List.

Suppliers under the PAH quality system are included in, or referenced in, a controlled 

list, along with each supplier’s associated scope. Procedures ensure purchase 

documentation is issued only to suppliers on this list.

3.6.5 Supplier Control Process.

A process that describes the means of supplier control, based on the criticality and 

complexity of the article or service provided to ensure conformity. The techniques 

described below are not all-inclusive but are provided to assist the PAH in developing 

supplier control procedures applicable to the organization.

3.6.5.1 Risk assessment includes both supplier and product risk factors. Product 

risk factors include safety classification from the design approval process, 

special process, and design and manufacturing complexity. SAE ARP9134, 

Supply Chain Risk Management Guidelines (dated 3/3/2004), is an industry 

guideline that the FAA has reviewed and found acceptable to provide 

guidance for the identification of supplier risk factors. 

3.6.5.2 Qualification and auditing of a supplier’s quality system.

3.6.5.3 Monitoring continued capability, throughout the supply chain, to perform 

all manufacturing activities, inspections, and tests to determine conformity 

of articles to applicable design data. The PAH will determine and apply 

acceptance standards for the physical condition, configuration status, and 

conformity of articles (including customer/buyer-furnished equipment). 

This determination will be made whether the articles are to be used in 

production, or as replacement or spare articles.

3.6.5.4 First article inspection to verify the article conforms to the approved data,

and any additional contract requirements, including destructive testing. 

A first article inspection should be conducted for a new production line, 

changes to the manufacturing or quality processes, or a new supplier. 

SAE AS9102A, Aerospace First Article Inspection Requirement

(revision A, dated 1/13/2004), is an industry standard that has been 
10/01/15 AC 21-43A

3-4

reviewed and found acceptable by the FAA to provide guidance in 

establishing first article processes and procedures.

3.6.6 Verification of Supplier Product.

Methods used to verify that articles conform to specified requirements, including 

customer-supplied materials and customer-designated sources. These methods include, 

but are not limited to, the following:

3.6.6.1 For articles accepted at the PAH’s facility, inspection may be accomplished 

on receipt, or when characteristics remain accessible, at any time before the 

final acceptance of the end item. The procedures should encompass a 

complete inspection (for example, all dimensional characteristics, 

nondestructive testing, hardness checks, spectrographic analysis, and 

functional tests). When the PAH has established that the supplier’s 

production or process methods will consistently produce articles that 

conform to its requirements, use of statistical quality control methods may 

be acceptable. The inspection plan used is required by the rule to preclude 

the acceptance of any nonconforming articles. Additionally, when it is 

necessary to determine material integrity, the following methods should 

be considered:

 Laboratory analysis to verify an article’s complete chemical and 

physical properties when tests can be performed without destroying the 

article (for example, by test coupon or small section of the article).

 When laboratory analysis cannot be performed without destroying 

the article, a sample of such articles should be subject to a qualitative 

and quantitative analysis (for example, by test coupon or small section 

of the article). This analysis will verify the article’s complete chemical 

and physical properties.

3.6.6.2 For articles that cannot or will not be inspected on receipt, the PAH’s 

procedures should include, as a minimum, inspection and testing of first 

articles to verify the articles conform to the PAH’s requirements and 

periodic inspection thereafter. Inspections and tests completed for the 

purpose of showing conformity to contract requirements may be 

accomplished at a supplier’s facility. These inspections and tests are 

required by the rule to be conducted according to a documented process 

within the PAH’s FAA-approved quality system. More than one article may 

require such inspection or testing until the production repeatability of the 

supplier has been established. These procedures should include methods to 

control, identify, and segregate articles waiting for testing or inspection 

from those already approved.

3.6.6.3 The PAH may allow a supplier to perform an appropriate or major 

inspection when it has established that the supplier is capable of performing 

such an inspection function. However, the PAH should approve any 
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3-5

delegation of inspection or use of statistical techniques beyond the first tier 

supplier. Such delegation includes the following:

 Major inspections. These include properties classified as critical 

by the approved design holder’s engineering drawings, process 

specifications, test specifications, and quality control procedures; or 

properties that cannot be verified except by destructive test of each 

article or extensive disassembly.

 Material review. This includes the identification and maintenance of 

relevant MRB procedures that define the scope and authority of the 

supplier MRB. Material review also includes the process for submitting, 

to the PAH, supplier nonconformances that are required by the rule 

to be approved before they can be considered as changes to the 

FAA-approved type design. 

 Statistical techniques.

3.6.6.4 The PAH is required by the rule to have supplier, including subtier supplier, 

information available to the FAA on request. This information should 

include, but is not limited to, the following:

 The name and address of each supplier.

 The name and address of each supplier that performs major inspection 

or material review for the PAH.

 The name and address of each supplier that furnishes articles when 

conformance to PAH requirements cannot, or will not, be made on 

receipt at the PAH’s receiving facility.

 Where, and by whom, the article will undergo inspection.

 The title and telephone number of the person to contact at the supplier 

facility that can furnish the purchase order(s), quality control data, 

technical data, and other pertinent data or information to the FAA.

 Identification of each supplier with direct ship authorization.

 Results of the PAH’s supplier evaluations, audits, or other 

surveillance activities.

3.6.6.5 The PAH is required by the rule to have a method for generating and 

maintaining inspection records. These procedures should include 

the following:

 Contents of each record used for the article inspected. This should 

include, as a minimum, the name, part or article number, serial number 

(if applicable), sample size, type and number of inspections made, 

conformance or nonconformance, number and description of 

nonconformances found, and action taken.
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 Requirements for record legibility, completeness, accuracy, and 

retention periods.

 Requirements that tools used for record retention (for example, 

tape files and microfilm) exhibit legible data and acceptance stamps 

or signatures.

3.6.7 Supplier Rating.

A system that exhibits the performance, capability, and reliability of suppliers.

3.6.8 Notification to the FAA.

A procedure to ensure advance notification to the FAA of any significant change in the 

scope of any supplier arrangements.

3.6.9 Reporting of Supplier Nonconformances.

A supplier-reporting process for products, articles, or services that have been released 

from or provided by a supplier and subsequently found not to conform to the PAH’s 

requirements.

3.6.10 Change Control.

A system that ensures changes in requirements are properly controlled and incorporated 

as agreed between the supplier and the PAH. These include, but are not limited to—

 Submittal to the PAH for approval of supplier designs and changes before 

incorporation, when required;

 Submittal to the PAH of changes to a supplier’s manufacturing process, 

when required;

 Submittal to the PAH of changes to a supplier’s quality system that may affect 

inspection, conformity, or the airworthiness of the article; and

 Methods used to act on notifications of nonconforming articles, and ensuring proper 

investigation and corrective action is taken.

3.6.11 Direct Ship.

Methods for controlling direct shipments from a PAH’s supplier to a customer for 

articles manufactured under the PAH’s production approval. The customer may order 

articles from either the PAH or the supplier. SAE ARP9114, Direct Ship Guidance for 

Aerospace Companies (dated 9/9/2005), is an industry guideline that has been reviewed 

by the FAA and found acceptable to provide guidance in establishing direct shipment 

processes and procedures. There may be restrictions on the direct shipment of articles 

from suppliers not located in the United States. The FAA Manufacturing Inspection 

District Office (MIDO) may be contacted for more specific information. Direct 

shipment may only be used when the PAH—

3.6.11.1 Has approved quality procedures that will compensate for the absence of 

inspections normally conducted at the PAH’s facility. Compensating factors 
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3-7

should include onsite evaluations of the supplier and the inspection of the 

article as either—

 A source inspection performed by the PAH, or

 An inspection by the supplier under a delegated inspection authority 

from the PAH.

3.6.11.2 Provides direct ship authorization to a supplier.

3.6.11.3 Issues and maintains records of direct ship authorization and makes them 

available to regulatory authorities on request. 

3.6.11.4 Ensures the requirements of the importing country will be met before 

authorizing direct shipment to a customer located outside the United States.

3.6.11.5 Obligates the supplier to—

 Direct ship the article.

 Meet any special customer requirements accepted by the PAH.

 Maintain evidence that the supplier has direct ship authorization from 

the PAH.

 Maintain evidence of direct shipments made on behalf of the PAH.

 Provide a signed direct ship declaration with the shipment.

 Provide a signed or stamped statement of conformance certifying that 

the article conforms to approved data with the shipment.

 Provide traceability of the shipment to the customer purchase request.

 Provide evidence with the shipment that acceptance or inspection has 

been accomplished by the PAH or through a delegated inspection 

authority.

 Provide a statement with the shipment that delegation of inspection 

authority has been granted by the PAH, and that the inspection was 

performed on behalf of the PAH when delegated inspection is used.

3.6.12 Other-Party Supplier Surveillance.

Methods for the use of other-party supplier surveillance may be used by a PAH 

provided the processes used meet the requirements identified in FAA Order 8120.12, 

Production Approval Holder Use Of Other-Parties To Supplement Their Supplier 

Control Program, and are documented in the PAH’s quality manual.

3.6.13 Suppliers Holding a Production Approval.

Methods used to address suppliers that hold a production approval for the article to be 

supplied. A PAH’s surveillance of individual suppliers may be reduced, but not 

eliminated, provided that—
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3-8

 Satisfactory interface between the two quality systems can be demonstrated 

to the FAA;

 The articles to be supplied are included in the scope of their production 

approval; and

 If the supplier is located outside the United States, a bilateral agreement 

for airworthiness is in effect between the United States and the country of the 

supplier. The bilateral agreement will include provisions for United States’

acceptance of the types of articles or products produced under the supplier’s 

production approval.

3.6.14 Use of Suppliers Located Outside the United States.

Methods for the use of suppliers (including subtier suppliers) outside the United States.

These should include provisions for the following:

 The PAH providing early notification to the FAA of the proposed use of a supplier 

in another country or jurisdiction.

 The PAH is required by the rule to make available to the FAA information on nonU.S. suppliers when requested.

 The PAH should ensure the FAA has access within the country where its supplier 

(including subtier suppliers) is manufacturing. It should also ensure all necessary 

processes, agreements, or procedures are in place to mitigate any undue burden on 

the FAA. Such burdens could inhibit the FAA from performing its regulatory 

functions and certificate management responsibilities.

 The PAH is required by the rule to ensure access to its suppliers. Assurance of 

access should be provided by the supplier, or when no regulatory agreements are in 

place, the government of the country or jurisdiction in which the supplier is located.

This assurance of access will be made available to the FAA. If access is at any time 

obstructed or denied, the FAA may instruct the PAH to cease using the supplier.

3.6.15 FAA Certificate Management in Other Countries.

When a PAH uses a supplier in a country or jurisdiction that has a bilateral agreement 

with the United States, the FAA may use a bilateral partner CAA to perform 

surveillance activities and/or conduct inspections on behalf of the FAA. The following 

procedures should be used:

 The PAH will afford the FAA or CAA any necessary support in its surveillance 

activity.

 When specifically requested by the FAA/CAA to facilitate surveillance activities, 

suppliers located outside the United States will make appropriate data available to 

the FAA through the PAH for certificate management purposes. This data should be 

in the English language.
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3-9

Note 1: FAA Order 8100.11, Decision Paper Requirements for Undue Burden and 

No Undue Burden Determinations Under 14 CFR part 21 for Production and Export 

Airworthiness Approvals, is used by FAA personnel when notified by the PAH of its 

intent to use a supplier outside the United States. 

Note 2: When the FAA requests a bilateral partner CAA to conduct surveillance 

activities or conformity inspection(s) at a supplier facility, the PAH will be responsible 

for any charges imposed by the CAA to accomplish the request(s).
10/01/15 AC 21-43A

4-1

CHAPTER 4. ELECTRONIC RECORDS.

4.1 Purpose.

This chapter provides information and guidance to PAHs on managing and controlling 

information systems that generate and store records used in the manufacture of products 

and articles. 

4.2 Background.

Several CFR sections require PAHs to maintain manufacturing and quality records as 

evidence that products and articles were produced in accordance with approved design 

requirements. As the aerospace industry has grown, many PAHs have developed or 

purchased information systems to generate and store manufacturing and quality records.

This chapter does not discuss what manufacturing and quality records should contain.

Rather, it describes the control mechanisms that a PAH should use for an information 

system that generates or stores records of products and articles manufactured to CFR 

requirements. 

4.3 Electronic Manufacturing and Quality System Records.

The record system should detect and deter unauthorized disclosure, modification, or 

use of records. Record systems require protection to ensure an accurate history of the 

manufacturing process of a product or article. An information management system 

should be protected from intruders. The system should also be protected from 

employees with authorized access privileges who attempt to perform unauthorized 

actions. Protection is achieved not only by technical, physical, and personnel 

safeguards, but also by clearly articulating to all employees the organizational 

procedures regarding authorized system use. 

4.3.1 Security Principles of Electronic Record Systems.

Although information management systems are diverse, common security attributes 

should be present in all record systems. An acceptable electronic record system should 

include the following: 

4.3.1.1 User Identification.

Each system user should be uniquely identified in the system with an 

account number or other identification code. This code identifies who has 

logged onto the system and is the primary means of verifying access. The 

information management system should retain the user identification codes 

entered to verify the requests made on the system. This information should 

be available for review by the system manager. 

4.3.1.2 Authentication of User.

There should be a means of verifying that the person entering the user

identification code is the authorized individual. Typically, this 
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4-2

authentication is through a password known only to the authorized user. 

This password would allow access to the system only when used together 

with the user identification code. Passwords should be updated periodically. 

4.3.1.3 Principle of Least Possible Privilege.

The authorization capability of the record system should follow the 

principle that each person is limited to only the information and transaction 

authority required by their job responsibilities. Privacy locks may be used to 

ensure this principle is followed. The level of access at which information 

is guarded within the system will depend on the design of the system. 

Based on the design of the information management system, privacy locks 

and keys may control single data elements or any combination of data 

elements. Levels of protection may include the following: 

 Data items, 

 Data aggregates, 

 Sets, 

 Fields, 

 Files, or 

 The complete system. 

4.3.1.4 Relation to Quality Data Responsibilities.

The system should ensure authorization privileges coincide with the 

responsibilities outlined in the organization’s quality system. For example, 

a manufacturing individual should not normally have write capability to an 

inspection acceptance field within a manufacturing record. Additionally, an 

inspector should not have access to a material review engineer disposition 

field within a material review record. The system should be capable of 

assigning each user the specific access authority needed. The various types 

of authorization may include the following: 

 Read-Only Access. Allows the user to read all or specific fields of 

information but does not allow any write or data manipulation 

capability. 

 Insert or Write Access Authorizations. Allows the user to enter data into 

specified fields or series of fields. 

 Change Access Authorizations. Allows the user to change entries 

in specified fields, but does not allow removal of the original entry. 

Changes may be accomplished by adding information to a restricted 

field (which is only used when the information in a field will be 

retained) but the information is not correct. For example, when an

article has been rejected by inspection, the rejection history may 

need to be retained even after the article is repaired. Change access 

authorization may be given to allow a senior inspector the authority to 
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4-3

change the inspection status of a reworked article; however, the record 

retains the original rejection indication and the user identification of the 

individual making the change. 

 Delete Access Authorizations. Allows the user to remove entries and 

leave the fields blank. While authorization to delete information by 

the user making the entry may be unrestricted, subsequent delete 

authorization should be closely controlled. Delete access authorization 

may be issued only to supervisors for deleting incorrect entries by 

subordinate employees. Subsequent to final approval of a product or 

article, information should not be deleted. After approval, incorrect data 

should be changed rather than deleted. 

 Security Access Authorizations. The system manager should retain the 

security access authorizations. These authorizations should only be 

exercised when properly executed documents allow their use, such as an 

approval letter signed by the director of quality. 

4.3.2 Auditing Mechanisms.

The information management system should include mechanisms that detect security 

breaches. These breaches should include any attempt to circumvent security or modify 

data without authorization. When such a security breach is detected, the system should 

alert the security manager and note any fields that have been accessed. The security 

breach information should be retained within the system until reviewed by the system 

manager. Security breach logs should be available only to select individuals and be 

protected from modification or data alteration at all times. Normally the system operator 

will be warned of unauthorized activity. Serious events, such as repeated unauthorized 

access attempts, may generate alarms at the system level. 

4.3.3 Protection Against Software and Hardware Destruction.

Information system records should be protected from destructive computer programs 

(that is, computer viruses) that attack or degrade the software. Information management 

systems should include virus detection programs that ensure viruses are not introduced 

into the environment through contaminated software or hardware. 

4.3.3.1 Inventories.

Inventories of all software and hardware configurations and locations 

should be used to ensure unauthorized hardware/software does not enter the 

information management system’s environment. 

4.3.3.2 Portable Equipment.

Portable computer equipment, such as laptops, represent special risks from 

destructive software; therefore, procedures should address their use in the 

information management system’s environment. 
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4-4

4.3.3.3 Network Security.

Many PAHs use large information management system networks with 

several interacting workstations or terminals. If a large interactive system is 

used, procedures should address additional protection necessary to control 

the network. The PAH should define the degree of protection, based on the 

complexity and application of the system.

4.3.3.4 System Backup.

Provisions should be developed for loss of data resulting from system 

failure. In all cases, lost data will be regenerated. The amount of time 

between backups will depend on the degree of risk the approval holder 

wishes to accept to reestablish lost information. 

4.3.4 Media Control.

The media on which information is stored should be carefully controlled and protected. 

Transportable media such as tapes, disks, and cartridges should be stored in secure 

locations. Media from external sources should be subject to validation to ensure they are 

from authorized sources. The listing below provides some examples of the types of 

media available. 

4.3.4.1 Floppy disks and computer hard drives should not be used for long-term 

storage of quality and manufacturing records. Information that will be 

retained for more than 3 months should be transferred to optical disks or

magnetic storage media such as chromium dioxide or metal particle tapes. 

An external or electronic labeling system should be used that ensures 

retrieval of individual records. 

4.3.4.2 Magnetic tapes should be tested within 6 months of use to verify the tape is 

free of errors and complies with the standards of the National Institute of 

Standards and Technology. Optimally, new tapes that have been maintained 

in a cool, dry environment should be chosen for storing records. Specific 

storage criteria for magnetic tapes include the following: 

 Environmental temperatures between 62 and 68 degrees Fahrenheit. 

 Relative humidity between 35 percent and 45 percent. 

 All tapes should be rewound under controlled tension every 31⁄2 years. 

 All information that will be retained for more than 10 years should be 

transferred to new tapes before reaching 10 years. 

 Annually, a statistically valid sample of all tapes should be tested to 

identify any loss of data. Tapes with 10 or more errors due to storage 

conditions should have all data transferred to new tapes. If the sample 

contains defective tapes, all other tapes that might have been affected by 

the same cause (that is, poor quality tape, high usage, poor environment, 

or improper handling) should be tested and corrected. 
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4-5

 Smoking, eating, or drinking in the magnetic tape storage or test areas 

should be prohibited. 

4.3.4.3 Chromium dioxide tapes should be handled like magnetic tapes except for 

periodic rewinding and cleaning. Although unproven, some industry experts 

believe rewinding and cleaning can be destructive to these tapes. 

4.3.4.4 Before use of any metal particle tapes for long-term storage, the PAH 

should ensure the tapes can maintain the integrity of the data stored. 

4.3.4.5 Additional information regarding long-term storage of electronic 

media can be found in the National Institute of Standards and Technology’s

Special Publication 500-101, Care and Handling of Computer Magnetic 

Storage Media. This publication is available from the Superintendent of 

Documents, U.S. Government Printing Office, Washington, DC 20402. 

4.3.4.6 Optical disks are recommended for their greater durability over older media 

such as magnetic tapes or disks.

4.3.4.6.1 Gold compact disks or digital versatile disks are preferred over similar 

media for long-term data storage. This is preferred over aluminum and 

silver writing surfaces, which are susceptible to corrosion or oxidation.

4.3.4.6.2 The PAH should maintain data transferred to storage, and provide access 

and ensure integrity of information for the long term. This may require 

migrating data from one media to the next to avoid media obsolescence. 

The devices necessary to read the discs should also be kept and maintained.

4.3.4.6.3 When obtaining archival grade discs, the PAH should consider the 

following: dye failure, bonding failure, scratches, and production quality. 

Testing is a highly recommended step in the process as conditions vary 

from machine to machine and among disks. It is recommended that the 

PAH keep multiple copies. Ideally one master copy should be stored under 

optimal conditions; one in-use copy should be stored for access purposes; 

and one safety copy should be stored at a different location.

4.3.4.6.4 Rewritable disk formats are not recommended as their use can lead to 

accidental, but permanent, loss of data.

4.3.4.6.5 Optical disks, for all their resilience, are still susceptible to environmental 

factors. Optical disks should not be exposed to extreme temperatures or 

direct sunlight that may cause heat buildup in the disk or damage the data 

layer with ultraviolet rays. The environment should optimally be maintained 

between 65 and 75 degrees Fahrenheit, and between 30 and 50 percent 

humidity.
10/01/15 AC 21-43A

4-6

4.3.5 Documentation.

The information management system should be properly documented. 

4.3.5.1 All software programs within the system, including program changes, 

should be fully documented. 

4.3.5.2 Procedures should be developed that control all data entered into the 

system. The procedures should address all information management system 

and human interface activities.

4.3.6 Availability.

The information management system industry is extremely dynamic concerning the 

systems that are available for recordkeeping. If the PAH changes from one system to 

another, the records produced by the old system will remain accessible to the FAA in a 

usable format. The PAH’s documented quality control system should indicate how this 

accessibility is accomplished. 

4.4 Information Management System Facility Management.

The information management system cannot be properly protected unless the facilities 

that house the equipment are properly protected from physical threats and hazards. 

Areas that should be considered include the following: 

4.4.1 Physical Security.

Each area where electronic records will be used should be surveyed for potential 

physical hazards. Fire and water are two of the most damaging forces regarding 

electronic information. Although not all hazards can be eliminated, opportunities for 

loss can be minimized by careful planning. 

4.4.2 Environmental Conditions.

Procedures should address the environmental conditions (for example, temperature, 

humidity, static) of the areas where the record system computers and stored media are 

located. Manufacturer specifications provide a useful guide for developing procedures. 

4.4.3 Disaster Recovery. 

A contingency plan should be developed that will allow recovery of critical system 

information in case of a disaster, such as a fire. One acceptable method is to have a 

remote backup system to which data is regularly transferred. 

4.5 Training.

Organizations that have elected to use electronic record systems should train each 

employee who is involved with any portion of that system. The subject matter and 

objectives should vary depending on the employee’s level within the organization and 

job responsibilities. Training should include security awareness, organizational policy, 

system operation, and record storage requirements. Training should be documented and 

those documents made available for review by the FAA. 
10/01/15 AC 21-43A

5-1

CHAPTER 5. INTERNAL AUDIT PROGRAM.

5.1 Purpose.

This chapter provides information and describes criteria for establishing an internal 

audit program. This chapter may be used by PAHs and their suppliers to show 

compliance with § 21.137 regarding internal audits.

5.2 Background.

An internal audit program is a comprehensive, continuous monitoring process 

that is initiated and usually managed by top company and quality assurance (QA) 

management. The personnel conducting the various audits in support of the internal 

audit program may be internal or external to the process. The objective of this process is 

to promote attitudes and procedures that focus on controlling processes, rather than 

depending on corrections of deficiencies, to meet quality goals.

5.3 Types of Internal Audit Programs.

An internal audit program should be part of the overall quality system, be approved by 

top company and QA management, and have a detailed written description of the key 

elements of the program. Each PAH is unique regarding size, facilities, personnel, 

resources, and methods of operation. Therefore, different types of programs may be 

appropriate for individual organizations. The three basic audit programs commonly 

used are (1) a dedicated internal quality audit department, (2) a dedicated individual 

manager with part-time auditors provided from throughout the organization, and 

(3) a combination of internal and external resources.

5.4 Elements of an Internal Audit Program.

An internal audit program is required by the rule to provide an adequate level of 

independence, a reporting process that ensures an accountable manager is aware of the 

audit results, and an effective corrective action process. The corrective action process 

should determine the root causes of deficiencies, correct these deficiencies, and prevent 

the recurrence of deficiencies. The program should have a structure and process 

designed to improve all system elements and processes that affect product quality.

The key elements of an internal audit program are as follows:

5.4.1 Audit Planning.

5.4.1.1 Audit Schedules.

Specific audit schedules should identify areas or activities subject to audit 

and ensure they are audited in a predetermined frequency and defined 

timeframe. Audit schedules should be based on the criticality of the activity 

being audited and should consider factors such as audit result history, 

production volume, process performance, high-risk areas, and 

management concerns. 
10/01/15 AC 21-43A

5-2

5.4.1.2 Auditor Selection.

The internal quality audit program should specify that auditors receive 

training in auditing, audit principles, and systems analysis techniques.

When full-time dedicated audit resources are not practical, developed 

procedures should show that persons performing audits or supervising 

audit teams are not directly responsible for the areas being audited.

5.4.1.3 Audit Preparation.

The auditor needs to be cognizant of internal and external requirements and 

other factors that may impact the process.

5.4.1.4 Checklist Development.

A thorough audit program should determine and evaluate how an 

organization’s quality manual, operating procedures, process controls, 

methods, and practices account for and incorporate all internal and external 

requirements. The questions contained in a checklist, in effect, transpose 

standards, regulations, or procedural requirements into a series of questions.

The checklist denotes points to be checked and helps the auditor determine 

the correct order in which to proceed with an audit.

5.4.2 Conducting the Audit.

The auditor should use the audit checklist to gather evidence to determine compliance 

or noncompliance to the quality system or standard being evaluated. Evidence is 

gathered via review of products or articles, documents, observation of activities, record 

checks, and interviews with key individuals in the area(s) under review. Evidence 

gathered during the audit should be documented as the audit is conducted. 

5.4.3 Reporting the Results.

A report should be prepared documenting the results of the audit. Procedures should 

be in place allowing straight-line reporting from the audit team to top company and 

QA management. The audit report should, at a minimum, include the following:

 Date the audit was conducted,

 Auditor performing the audit,

 Standard or procedure the audit was conducted against (for example, part 21 

requirements or the PAH Quality Manual),

 Summary of findings. This should include a brief description of the findings and 

supporting documents (for example, PAH procedures or records),

 Evaluation and relative importance of a finding (major or minor), and

 Summary of observations, both positive and negative.

5.4.4 Root Cause/Corrective and Preventive Action.

The PAH should determine root cause and develop a corrective and preventive 

action plan.
10/01/15 AC 21-43A

5-3

5.4.5 Close the Audit Findings.

After the process owner indicates completion of the corrective action, QA management 

should verify that process changes effectively corrected the existing deficiency and 

prevented recurrence. If the verification process indicates that the corrective action was 

not effective, top company management should be notified. QA management should 

then request additional corrective action and revalidation from the process owner.

5.4.6 File Report.

Audit reports, including corrective action and closure data, should be maintained.
10/01/15 AC 21-43A

6-1

CHAPTER 6. ADDITIONAL PAH REQUIREMENTS.

6.1 Quality Manual.

Sections 21.138, 21.308, and 21.608 state that each applicant or current PAH provide a 

manual describing its quality system to the FAA for approval. The manual is required 

by the rule to be in the English language and retrievable in a form acceptable to 

the FAA.

6.1.1 If the quality manual is stored digitally through a computer-based medium, it should 

be easily available to PAHs and FAA personnel who need to use the manual for 

performing their duties.

6.1.2 PAHs are reminded that the manual is required by the rule to address all of the quality 

system requirements in 21.137.

6.2 Location of or Change to Manufacturing Facilities.

Sections 21.139, 21.309, and 21.609 state that a PAH may obtain a production approval 

for manufacturing facilities located outside the United States, if the FAA finds no undue 

burden in administering the applicable requirements of Title 49 of the United States 

Code and this subchapter.

6.2.1 The PAH is required by the rule to obtain FAA approval before making any changes to 

the location of any of its manufacturing facilities.

6.2.2 The PAH is required by the rule to immediately notify the FAA, in writing, of any 

change to the manufacturing facilities affecting the inspection, conformity, or 

airworthiness of its product or article.

6.2.3 Each applicant for a production approval or current PAH should check with its local 

MIDO to determine approval and notification methods.

6.3 Inspections and Tests.

6.3.1 Sections 21.140, 21.310, and 21.610 state that each applicant or current PAH allow the 

FAA to—

 Inspect its quality system, facilities, technical data, and manufactured products or 

articles.

 Witness any tests including any inspections or tests at any supplier facility (within 

the PAH’s supply chain) necessary to determine compliance with the applicable 

subchapter.

 The PAH should ensure FAA access to, and cooperation of, all involved facilities in 

the supply chain. The PAH should also ensure access to, and cooperation of, all 

involved facilities in the supply chain for itself or its representatives.
10/01/15 AC 21-43A

6-2

6.3.2 Section 21.310 also prescribes prohibitions unique to that section. PAHs operating 

under subpart K should refer to the applicable section to ensure they are not in violation 

of those prohibitions.

6.4 Issuance of a Production Approval.

Sections 21.141, 21.311, and 21.611 states that the FAA issues a production approval 

after finding that the applicant complies with the requirements of the applicable subpart.

6.4.1 Applicants for a production approval should ensure they have reviewed and 

documented how they have met the applicable requirements so the FAA may complete 

a timely review.

6.4.2 Applicants for a production approval that are part of a multinational and/or 

multicorporate consortium may refer to appendix G to this AC for further guidance on 

how to comply with § 21.137.

6.5 Production Limitation Record.

Section 21.142, Production limitation record, states that the FAA will issue a PLR as 

part of a PC. A PLR lists the TC number and model of every product the PC holder 

is authorized to manufacture, as well as every interface component a PC holder 

is authorized to manufacture and install under part 21. PC holders should ensure the 

PLR accurately reflects any product it intends to manufacture and any interface 

component it intends to manufacture and install.

6.6 Duration.

6.6.1 Sections 21.143, 21.313, and 21.613 state that a production approval be considered 

effective until it is surrendered, suspended, revoked, or terminated by the FAA. 

There are minor differences between the duration of a PC and that of a PMA or 

TSO authorization. Applicants receiving a production approval should refer to the 

applicable section for information on the duration of a particular production approval.

6.6.2 Section 21.613 also sets forth the requirements for revised or canceled TSOs. The 

holder of an affected FAA letter of acceptance of a statement of conformance, TSO 

authorization, or letter of TSO design approval, may continue to manufacture articles 

that meet the original TSO without obtaining a new acceptance, authorization, or 

approval. However, the holder is required by the rule to comply with the requirements 

of this chapter.

6.7 Transferability.

Sections 21.144, 21.314, and 21.614 state that a PAH may not transfer the production 

approval or letter of TSO design approval.
10/01/15 AC 21-43A

6-3

6.7.1 The FAA prohibits that transfer of a production approval, but the FAA recognizes that 

companies do change ownership. In many cases, design data, quality systems, and 

manufacturing processes are all transferred as part of the change in ownership, and in 

these instances the FAA will support the establishment of a new production approval.

6.7.2 Applicants for new production approvals based on previously issued production 

approvals should consult their local ACO and MIO for assistance.

6.8 Privileges.

Section 21.145, Privileges, identifies privileges associated with a production certificate.

PAHs should refer to the applicable section to ensure that they know these privileges.

6.9 Responsibility of Holder.

Sections 21.146, 21.316, and 21.616 prescribe a PAH’s responsibilities. PAHs should 

refer to the appropriate rule section for the type of production approval they wish to 

obtain or maintain to ensure they understand all of the applicable requirements.

6.9.1 The PAH is responsible for controlling the manufacture of completed products and

articles in conformity with the FAA-approved type design data and quality system 

requirements. This responsibility cannot be delegated to, or relieved by, the use of 

approved suppliers, risk and revenue sharing partners, or co-producers.

6.9.2 Although this responsibility never changes, the PAH may be relieved of some of the 

burden of inspection and testing duties when it uses type-certificated products or articles 

manufactured under another person’s production approval. This relief may be extended 

to include products or articles manufactured in a foreign country and imported into the 

United States under the provisions of a bilateral agreement pursuant to part 21, subpart 

N, Approval of Engines, Propellers, Materials, Parts, and Appliances: Import. 

6.9.3 All types of PAHs now have substantially similar responsibilities, as described below. 

6.9.3.1 Paragraph (a) of each section requires the PAH to document any 

organizational changes. Such documentation is accomplished by amending 

the document required by §§ 21.135, 21.305, and 21.605, respectively, 

detailing how the organization will comply with the provisions of the 

respective subpart. The PAH is required by the rule to provide these 

amendments to the FAA. This requirement ensures the FAA remains 

informed of changes in a PAH’s organization as well as its continued 

compliance with the respective subpart.

6.9.3.2 Paragraph (b) of each section requires a PAH to maintain its quality system 

in compliance with the data and procedures approved for its production 

approval.
10/01/15 AC 21-43A

6-4

6.9.3.3 Paragraph (c) of each section requires a PAH to ensure each product

or article conforms to its approved design and is in a condition for 

safe operation.

6.9.3.4 Paragraph (d) of each section requires a PAH to mark its product or article 

in accordance with part 45, including critical parts.

6.9.3.5 Paragraph (e) of each section requires a PAH to identify any parts of the 

product or article that leave the manufacturer’s facility as FAA-approved.

This includes the manufacturer’s part number and name, trademark, 

symbol, or other FAA-approved PAH identification. (Examples of other 

FAA-approved PAH identification are production approval number, cage 

code, or a federal supply code for manufacturers (FSCM).) The information 

may be conveyed in the form of stickers, tags, shipping documents, 

shipping containers, or by other means. This information may also be 

applied directly to the subassemblies or component parts in accordance with 

approved data.

6.9.3.6 Paragraph (f) of each section requires a PAH to have access to type design 

data necessary to determine conformity and airworthiness for each product 

and article produced under its production approval. TSO authorization 

holders have the additional requirement of retaining this data until they no 

longer manufacture the article. At that time, copies of the data are required 

by the rule to be sent to the FAA.

6.9.3.7 Paragraph (g) of each section requires a PAH to retain the document(s) 

granting production approval and make it available to the FAA on request.

6.9.3.8 Paragraph (h) of each section requires a PAH to make available to the FAA 

information regarding all delegation of authority to suppliers. This includes 

delegations for the purpose of performing major inspections, delegations 

related to direct ship authorization, and delegations related to the disposition 

of nonconforming material.

6.10 Amendment of Production Certificates.

Section 21.147, Amendment of production certificates, requires:

6.10.1 Any applicant for an amendment to a PC seeking to add a type certificate, model, or 

both must comply with §§ 21.137, 21.138, and 21.150.

6.10.2 Any applicant for an amendment to a PC, under § 21.147, must apply in a form and 

manner prescribed by the FAA. Currently, the FAA expects an applicant to submit a 

properly executed FAA Form 8110-12, Application For Type Certificate, Production 

Certificate, Or Supplemental Type Certificate. Any application for an interface 

component should clearly note that in block 5.a.
10/01/15 AC 21-43A

6-5

6.10.3 Under §21.147(c), any applicant may apply to amend its PLR to allow the manufacture 

and installation of an interface component, provided—

 The applicant owns or has a license to use the design and installation data for the 

interface component, and makes that data available to the FAA on request.

 The interface component is manufactured by the applicant.

 The applicant’s product conforms to its approved type design, and the interface 

component conforms to its approved type design.

 The assembled product with the installed interface component is in a condition for 

safe operation unless otherwise noted.

 The applicant complies with any other conditions and limitations the FAA considers 

necessary.

6.11 Approval for Deviation.

Section 21.618, Approval for deviation, requires a manufacturer requesting approval to 

deviate from a performance standard of a TSO to show that factors or design features 

provide an equivalent level of safety and compensate for the standards from which a 

deviation is requested. The manufacturer will send requests for approval to deviate to 

the appropriate ACO, along with all pertinent data. If the article is manufactured under 

the authority of a foreign country or jurisdiction, the manufacturer will send requests for 

approval to deviate, along with all pertinent data, through the CAA of that country or 

jurisdiction to the FAA.

6.12 Design Changes.

Sections 21.319 and 21.619 prescribe what constitutes a major or minor design change, 

as well as who may make those changes. Minor changes will be approved under a 

method acceptable to the FAA. Major changes are required by the rule to be approved 

by the FAA before they can be included in the design of the product or article. PAHs

that are uncertain if a design change is major or minor should consult with the FAA 

before implementing the changes.

6.13 Changes in Quality System.

Sections 21.150, 21.320, and 21.620 establish that each change to the quality system is 

subject to FAA review. Additionally, the PAH is required by the rule to immediately 

notify the FAA, in writing, of any change that may affect the inspection, conformity, or 

airworthiness of its product or article. PAHs that wish to initiate changes to the quality 

system should submit the proposed changes to the MIO, MIDO, or Manufacturing 

Inspection Satellite Office (MISO) with certificate management responsibilities.
10/01/15 AC 21-43A

6-6

6.14 Issuance of Letters of TSO Design Approval: Import Articles.

Section 21.621, Issue of letters of TSO design approval: Import articles, prescribes 

under what conditions a letter of TSO design approval may be issued for imported 

articles.
10/01/15 AC 21-43A

Appendix A

A-1

APPENDIX A. RELATED PUBLICATIONS.

A.1 Federal Aviation Administration (FAA) Orders.

 FAA Order 8000.95, Designee Management Policy.

 FAA Order 8100.8, Designee Management Handbook.

 FAA Order 8100.11, Decision Paper Requirements for Undue Burden and 

No Undue Burden Determinations Under 14 CFR part 21 for Production and 

Export Airworthiness Approvals.

 FAA Order 8100.15, Organization Designation Authorization Procedures.

 FAA Order 8110.4, Type Certification.

 FAA Order 8110.42, Parts Manufacturer Approval Procedures.

 FAA Order 8120.22, Production Approval Procedures.

 FAA Order 8120.23, Certificate Management of Production Approval Holders.

 FAA Order 8120.12, Production Approval Holder Use Of Other-Parties To 

Supplement Their Supplier Control Program.

 FAA Order 8120.13, International Cooperative Supplier Surveillance 

Program Procedures.

 FAA Order 8130.21, Procedures for Completion and Use of the Authorized Release 

Certificate, FAA Form 8130-3, Airworthiness Approval Tag.

A.2 FAA Advisory Circulars (AC).

 AC 20-115, Airborne Software Assurance.

 AC 21-2, Complying with the Requirements of Importing Countries or Jurisdictions 

when Exporting U.S. Products, Articles, or Parts.

 AC 21-18, Bilateral Airworthiness Agreements.

 AC 21-23, Airworthiness Certification of Civil Aircraft, Engines, Propellers, and 

Related Products Imported to the United States.

 AC 21-24, Extending a Production Certificate to a Facility Located in a Bilateral 

Airworthiness Agreement Country.

 AC 21-44, Issuance of Export Airworthiness Approvals Under 14 CFR Part 21 

Subpart L.
10/01/15 AC 21-43A

Appendix A

A-2

A.3 Society of Automotive Engineers (SAE) Documents.

Copies may be purchased from the SAE.

 SAE Aerospace Recommended Practice (ARP) 9005, Aerospace Guidance for 

Non-Deliverable Software.

 SAE ARP9013, Statistical Product Acceptance Requirements.

 SAE ARP9013/1, Statistical Product Acceptance Requirements Using Isolated Lot 

Sampling Methods.

 SAE ARP9013/2, Statistical Product Acceptance Requirements Using Attribute or 

Variable Lot Acceptance Sampling Plans.

 SAE ARP9013/3, Statistical Product Acceptance Requirements Using Process 

Control Methods.

 SAE ARP9013/4, Statistical Product Acceptance Requirements Using Continuous 

Sampling, Skip-Lot Sampling, or Methods for Special Cases.

 SAE ARP9114, Direct Ship Guidance for Aerospace Companies.

 SAE ARP9134, Supply Chain Risk Management Guidelines.

 SAE Aerospace Standard (AS) 9006, Deliverable Aerospace Software Supplement 

for AS9100A. 

 SAE AS9100C, Quality Management Systems - Aerospace Requirements. 

 SAE AS9102A, Aerospace First Article Inspection Requirement.

A.4 Other Documents.

 National Aerospace Standard (NAS) 410, NAS Certification and Qualification of 

Nondestructive Test Personnel.

 Industrial Fasteners Institute Standard IFI-301, Gage Calibration Requirements and 

Procedures for Thread Gages.
10/01/15 AC 21-43A

Appendix B

B-1

APPENDIX B. DEFINITIONS.

For the purposes of this document, the following definitions apply.

B.1 Accountable Manager.

A representative of the applicant for, or holder of, a production approval. An 

accountable manager serves as a PAH’s primary contact with the FAA office 

responsible for issuance of the production approval or certificate management of the 

PAH. The accountable manager is responsible within the applicant’s or PAH’s 

organization for, and has the authority over, all production operations conducted 

pursuant to 14 CFR part 21, Certification Procedures for Products and Articles. The 

accountable manager confirms that the procedures described in the quality manual

required by §§ 21.138, 21.308, or 21.608 are in place and that the production approval 

holder satisfies the requirements of subchapter C, Aircraft.

B.2 Airworthiness Approval.

A document issued by the FAA for an aircraft, aircraft engine, propeller, or article that 

certifies the aircraft, aircraft engine, propeller, or article conforms to its approved 

design and is in a condition for safe operation, unless otherwise specified.

B.3 Applicable Design Data.

All necessary drawings, specifications, and other technical information provided 

by the applicant for, or the holder of, a design organization approval, TC, STC, 

TSO authorization, PMA, or equivalent, and released in a controlled manner for 

production purposes.

B.4 Approved.

Unless used with reference to another person, means approved by the FAA or any 

person to whom the FAA has delegated its authority in the matter concerned, or 

approved under the provisions of a bilateral agreement between the United States and 

= a foreign country or jurisdiction.

B.5 Approved Design Data.

Applicable design data that has been granted an approval (for example, TC, STC, 

TSO authorization, PMA, or equivalent) by the relevant CAA.

B.6 Article.

A material, part, component, process, or appliance.
10/01/15 AC 21-43A

Appendix B

B-2

B.7 Authorizations.

Permission granted by management to individuals authorized with full or partial 

admission to restricted access information management systems. 

B.8 Authorized Release Document.

A document issued by a PAH for an aircraft engine, propeller, or article that certifies 

the aircraft engine, propeller, or article conforms to its approved design and is in a 

condition for safe operation, unless otherwise specified.

B.9 Data.

A set of alphanumeric and/or graphic characters organized to represent facts or 

instructions suitable for communicating, interpreting, or processing by a computer.

B.10 Direct Ship Authorization.

The written authorization granted by a PAH with responsibility for the airworthiness of 

an article, to a supplier to ship articles produced in accordance with the PAH’s quality 

system, directly to end users without the parts being processed through the PAH’s own 

facility.

B.11 Field.

An element of a computer file that may contain data and whose size is controlled by the 

program. 

B.12 Information Systems.

A computer system designed to automate a specific function, such as records 

management.

B.13 Interface Component.

An article that serves as a functional interface between an aircraft and an aircraft engine, 

an aircraft engine and a propeller, or an aircraft and a propeller. An interface component 

is designated by the holder of the type certificate or the supplemental type certificate 

who controls the approved design data for that article.

B.14 Licensing Agreement.

A commercial agreement between a TC or STC holder and a PAH (or applicant) 

formalizing the rights and duties of both partners to use the design data for the purpose 

of manufacturing the product or article.
10/01/15 AC 21-43A

Appendix B

B-3

B.15 Privacy Keys.

A password or procedure that allows full or partial access to a restricted information 

management system. 

B.16 Privacy Locks.

A procedure that restricts access to a portion of an information system. 

B.17 Production Approval.

A document issued by the FAA to a person that allows the production of a product or 

article in accordance with its approved design and approved quality system and can take 

the form of a production certificate, a PMA, or a TSO authorization.

B.18 Quality Escape.

A product or article that has been released from the quality system and does not 

conform to the applicable design data or quality system requirements.

B.19 Quality System.

A documented organizational structure containing responsibilities, procedures, 

processes, and resources that implement a management function to determine and 

enforce quality principles.

B.20 Read-Only Capability.

The authority given to an individual, allowing that person to access or read data in a 

field without being able to change or enter data. 

B.21 Salvageable.

Aviation parts that are unserviceable (or of unknown status) that may have a potential 

aviation use. Salvageable parts may be considered in different categories:

 Non-airworthy parts which may be worth storing until restored to an airworthy 

condition, or until they are shown to be airworthy with adequate documentation 

and/or testing; and

 Parts that cannot be found airworthy at the time they are stored; but, there is reason 

to believe that they are likely to have future aviation value. For example, a part that 

has reached its present life limit may be stored in an area in anticipation of an 

increase in that limit based on in-service experience and analysis, or a part that 

requires repair for which there is currently no approved process may be stored in 

anticipation of a new approved process.
10/01/15 AC 21-43A

Appendix B

B-4

B.22 Scrap.

Products and articles an owner has disposed of because they are beyond economical 

repair, considered to be of little value, or unusable for any other aviation reason.

Scrap products and articles are placed into four categories:

 Products and articles that have no value except for the base material.

 Products and articles whose misuse in aviation poses an insignificant safety risk.

 Products and articles that were used in low-risk, safety aviation applications and 

may have future use in non-aviation applications.

 Products and articles that were used in safety-critical aviation applications and may 

have future use in non-aviation applications.

B.23 Standard Part.

A part manufactured in complete compliance with an established government or 

industry-accepted specification that contains design, manufacturing, and uniform 

identification requirements. The specification must include all information necessary 

to produce and conform the part, and must be published so any person/organization 

may manufacture the part. 

B.24 Supplier.

Any person, as defined by 14 CFR 1.1, at any tier in the supply chain, who provides a 

product, article, or service that is used or consumed in the design or manufacture of, or 

installed on, a product or article.

B.25 Write Capability.

The authority given to a user that allows that person to enter or change data in a field. 
10/01/15 AC 21-43A

Appendix C

C-1

APPENDIX C. PRODUCTION UNDER TYPE CERTIFICATE.

C.1 Purpose.

This appendix covers only those sections of 14 CFR part 21, subpart F, Production 

Under Type Certificate, where further discussion, information, or examples would be 

helpful. The headings of each of the following main paragraphs refer to the applicable 

section of subpart F. A manufacturer producing a product under subpart F is allowed to 

produce and sell articles associated with its product as spares for that product only.

C.2 Discussion.

C.2.1 Section 21.121, Applicability.

The term “production under a type certificate” refers to production by a TC holder or its 

licensee without benefit of a production approval for that product or article thereof.

C.2.2 Section 21.122, Location of or change to manufacturing facilities.

C.2.2.1 If the FAA finds no undue burden in administering the applicable 

requirements of Title 49 of the United States Code and 14 CFR chapter I, 

subchapter C, Aircraft, the manufacturer may use manufacturing facilities 

located outside of the United States.

C.2.2.2 The TC holder is required by the rule to obtain FAA approval before 

making any changes to the location of any of its manufacturing facilities.

C.2.2.3 The TC holder is required by the rule to immediately notify the FAA, in 

writing, of any change to the manufacturing facilities that may affect the 

inspection, conformity, or airworthiness of its product or article thereof.

C.2.2.4 Each TC holder should check with its local MIDO to determine approval 

and notification methods.

C.2.3 Section 21.123, Production under type certificate.

C.2.3.1 Paragraph (c) requires each manufacturer of a product or article thereof 

under a TC to maintain completed inspection and test records for 5 years.

For critical parts identified pursuant to 14 CFR part 45, Identification and 

Registration Marking, section 45.15(c), the record retention requirement is 

10 years. The beginning of the 5-year or 10-year record retention for a given 

product or article thereof corresponds to the manufacturing completion date 

of that product or article. These records will enable the TC holder to prove 

to the FAA that it has properly completed and documented all inspections 

and tests required to ensure compliance with subpart F. Manufacturers are 

required by the rule to maintain evidence that indicates conformance or 

nonconformance of the product or article thereof regarding required 

inspections and tests. 
10/01/15 AC 21-43A

Appendix C

C-2

C.2.3.2 Paragraph (d) requires each manufacturer of a product or article thereof 

manufactured under a TC to allow the FAA to make any inspection or test 

(including any inspection or test at a supplier facility) necessary to 

determine compliance. “Allowing” means the manufacturer will—

 Give free and full access to facilities, information, and relevant data to 

show compliance with this subchapter, and

 Provide appropriate assistance to the FAA to enable the FAA to perform 

these inspections and tests. Inspections and tests include audits, 

inquiries, questions, discussions, monitoring, witnessing, checks, flight 

and ground tests, and inspections of in-process and completed products 

or articles thereof, and all relegated design data.

C.2.3.3 Paragraph (f) requires a TC holder to identify any parts of the product that 

leave the TC holder’s manufacturing facility as FAA-approved. This 

includes the manufacturer’s part number and name, trademark, symbol, or 

other FAA-approved identification (for example, a cage code or an FSCM).

The information may be conveyed in the form of stickers, tags, shipping 

documents, shipping containers, or by other means. This information may 

also be applied directly to the subassemblies or component parts in 

accordance with approved data.

C.2.3.4 Paragraph (g) requires the manufacturer producing under subpart F to 

obtain a production approval under subpart G, Production Certificates, 

within 6 months of the TC’s issuance. The following requirements apply:

 During the 6-month period from the TC’s issue date, each completed 

product or article thereof is subject to FAA inspection before the 

issuance of airworthiness certificates or approvals. Because of limited 

FAA monetary and manpower resources, these inspections may be 

delayed or be very time-consuming, and would normally allow a very 

low production rate by the TC holder. It is, therefore, to the TC holder’s 

advantage to develop and implement an approved system in accordance 

with subpart G as quickly as possible.

 If the TC holder does not establish and implement an approved system 

in accordance with subpart G at the end of the 6-month period, and there 

are no extenuating circumstances to preclude such establishment and 

implementation, the FAA may discontinue inspections until an 

approvable system has been established.

C.2.4 Section 21.127, Tests: aircraft.

C.2.4.1 Before the production flight test of aircraft, any items coming under the 

provisions of § 21.127(b)(5) should be checked. For example, it is 

important that—
10/01/15 AC 21-43A

Appendix C

C-3

 The means provided to level the aircraft are accurate and in conformity 

with type design data.

 Each aircraft is weighed to determine the empty weight and center of 

gravity is in conformity with the type design data.

C.2.4.2 The flight test procedure and flight check-off form, required to be 

established and approved under § 21.127, should be submitted to the 

FAA ACO for approval.

C.2.5 Section 21.128, Tests: aircraft engines.

C.2.5.1 The test equipment used for test runs should be capable of accurate output 

determinations sufficient to ensure the engine output delivered complies 

with official ratings and operating limitations.

C.2.5.2 Following the tests prescribed by § 21.128, each engine is subject to 

FAA inspection to determine the engine is in condition for safe operation.

Such inspection may also include internal inspection and examination to 

ensure no unsafe condition exists. The degree of internal inspection will 

normally be determined by the cumulative results of such inspections 

conducted on the first production engines, and by service experience. The 

FAA may consider a statistical plan for internal engine inspections if the 

TC holder submits a proposal based on product uniformity, a satisfactory 

history of previous internal inspections, and service experience.

C.2.6 Section 21.129, Tests: propellers.

C.2.6.1 An acceptable functional test for variable pitch propellers would include 

25 complete cycles of the control throughout the propeller pitch and 

rotational speed ranges. Additionally, for feathering or reversing propellers, 

there should be five cycles of feathering operation and five cycles of 

reversing operation from the lowest normal pitch to the maximum reverse 

pitch.

C.2.6.2 Following the functional test, each propeller is subject to inspection by the 

FAA in a similar manner as that described for engines in paragraph C.2.3

of this appendix.

C.2.7 Section 21.130, Statement of conformity.

On receipt of the statement of conformity, the FAA will inspect the completed product 

to determine it conforms to the type design and is in a condition for safe operation. If 

so, an airworthiness certificate will be issued for aircraft, or an airworthiness approval 

tag will be issued for an engine, propeller, or articles thereof.
10/01/15 AC 21-43A

Appendix D

D-1

APPENDIX D. SCRAP OR SALVAGEABLE AIRCRAFT PRODUCTS AND ARTICLES.

D.1 Purpose.

The information provided in this appendix may be used by production approval holders

and their suppliers. This information may be—

 Applied to manufacturers involved in the control, distribution, sale, maintenance, 

or disposition of scrap or salvageable aircraft engines, aircraft propellers, and 

aircraft articles.

 Used to identify, segregate, and control rejected products and articles to preclude 

their use in a finished product.

D.2 Background.

Products and articles may be deemed scrap or salvageable once they are determined as 

unserviceable or ineligible for installation on an aircraft, aircraft engine, or aircraft 

propeller. In some cases, it has been common practice to dispose of scrapped products 

and articles by selling, discarding, or transferring the articles. A lack of proper industry 

controls may result in an article being copied or repaired, reintroduced into the market, 

and being falsely identified as an approved article. Use of such products and articles can 

have serious safety implications and liabilities for the manufacturer, aircraft operator, 

or repair facility. Using an effective system to control scrap or salvageable products 

and articles will reduce the chances that these articles will be distributed or sold 

as serviceable.

D.3 Documenting the Process.

Maintaining a well-defined quality program is fundamental to controlling rejected 

products and articles. One element to be addressed within this program is the control 

and disposal of scrap and salvageable products and articles. Quality systems without 

this element could allow products and articles to migrate back into active inventories.

D.4 Preventing Misrepresentation of Scrap Products and Articles.

D.4.1 Manufacturers should dispose of scrap products and articles through mutilation, when 

appropriate. Proper and thorough mutilation of products and articles will ensure they are 

unusable for their original application and render them incapable of being reworked or 

camouflaged to provide the appearance of being serviceable. 

D.4.2 Effective mutilation may be accomplished by one or a combination of the following 

methods: grinding, burning, removal of a major integral feature, permanent distortion of 

products and articles, cutting a significant size hole with a cutting torch or saw, melting, 

sawing into many small pieces, and removing manufacturer identification, part, lot, 

batch, and serial number.
10/01/15 AC 21-43A

Appendix D

D-2

D.5 Disposing of Scrap Products and Articles.

Manufacturers disposing of scrap products and articles may choose to release them for legitimate 

non-flight use. This non-flight use may include training, education, research and development, 

tool set up, or non-aviation applications. In such instances, mutilation may not be appropriate.

The following methods may be used to prevent future misrepresentation:

D.5.1 Permanently and clearly mark the products and articles as “Not for Aviation Use” and 

“Not Serviceable.” Ink stamping is not normally considered an acceptable method 

unless indelible ink is used and the products and articles are checked to ensure the ink 

cannot be removed.

D.5.2 Remove part number identification.

D.5.3 Remove identification plate and marking.

D.5.4 Maintain a tracking or accountability system, by serial number or other individualized 

data, to record transferred scrap products and articles.

D.5.5 In any agreement or contract transferring scrap products and articles, develop written 

procedures identifying disposition and disposal requirements.

D.5.6 Secure a signed certification statement from the purchaser indicating “the purchaser will 

not use or convey these products and articles for use in aviation products.” 

D.5.7 For those articles determined to be scrap and having no further aviation use, 

manufacturers should—

 Establish and maintain procedures requiring documentation (for example, a written 

contract) from scrap dealers indicating their intent to properly dispose of all 

products and articles received.

 Establish and maintain procedures to audit scrap dealers to their 

contract requirements.

 Maintain records of serial numbers for scrapped life-limited or other critical 

products and articles. In such cases, the owner who mutilates applicable products 

and articles is encouraged to provide the original manufacturer with the data plate 

or serial number and final disposition of the product or article.

D.6 Preventing Misrepresentation of Salvageable Products and Articles.

D.6.1 Manufacturers handling salvageable products and articles should—

 Establish secure areas to segregate such articles from active serviceable inventories 

and to prevent unauthorized access.

 Develop procedures to address the retention of records for products and articles 

exceeding current repair criteria and life limits and that are being held in 

anticipation of future repair methods or extension to life limits. Caution should 
10/01/15 AC 21-43A

Appendix D

D-3

be exercised to ensure these products and articles receive the appropriate 

final disposition.

D.6.2 Aviation safety is best served with sound processes that control scrap and salvageable 

products and articles. Using the practices identified in this document will reduce 

the potential that these articles will be distributed and sold as serviceable products.

With aviation safety in mind, the aviation community is responsible for preventing 

misrepresentation of aviation products and articles. The FAA encourages manufacturers 

to establish a program that controls scrap and salvageable products and articles as an 

integral part of their quality management systems.

D.6.3 Misrepresented products and articles that are offered for sale, or have been furnished for 

aviation use, should be reported to the FAA. This may be accomplished by submitting 

FAA Form 8120-11, Suspected Unapproved Parts Notification, or by calling the 

Aviation Safety Hotline toll free number, 800-255-1111.
10/01/15 AC 21-43A

Appendix E

E-1

APPENDIX E. ISSUING AUTHORIZED RELEASE DOCUMENTS FOR AIRCRAFT ENGINES, 

PROPELLERS, AND ARTICLES.

E.1 Purpose.

This appendix provides guidance to any PAH on developing procedures to comply with

14 CFR 21.137(o). These procedures are required before a PAH may issue authorized 

release documents, using FAA Form 8130-3, for new aircraft engines, propellers, and 

articles manufactured by the production approval holder, or for used aircraft engines, 

propellers, and articles when rebuilt or altered pursuant to § 43.3(j).

E.1.1 A PAH may choose to either issue its own authorized release documents or rely on 

FAA personnel or designees. A PAH is required to have procedures under § 21.137(o)

only if the PAH seeks to issue its own authorized release documents. However, after the 

FAA has approved a PAH’s procedures to allow the PAH to issue authorized release 

documents, the FAA expects the PAH to use its own approved system, rather than 

relying on the FAA for Form 8130-3 approval.

E.1.2 Section 21.137(o) requires any PAH issuing authorized release documents to establish

quality system procedures providing for the selection, appointment, training, 

management, and removal of individuals authorized by the PAH to issue authorized 

release documents. These procedures should ensure that individuals selected to issue 

authorized release documents meet the qualification requirements for an FAA DMIR 

with function code 03, as described in FAA Order 8000.95, Designee Management 

Policy.

E.2 Background, Knowledge, and Experience.

In selecting and appointing individuals authorized to issue authorized release 

documents, a PAH should ensure those selected individuals possess knowledge of the 

applicable FAA regulations, policies, guidance, and procedures, and have the technical 

experience and skills appropriate for the complexity of the product or article for which 

an authorized release document is to be issued. In addition, a PAH’s selection and 

appointment records should show that each selected individual’s background, 

knowledge, and experience demonstrate his or her integrity and ability to apply sound 

judgment. The FAA strongly suggests any PAH review the knowledge, experience, 

skill, and training standards described in FAA Order 8000.95 and used by the FAA to 

select and appoint designees pursuant to 14 CFR part 183, Representatives of the 

Administrator.

E.3 Authorized Personnel.

A PAH’s FAA-approved procedures should include a current list of all personnel 

authorized to issue authorized release documents. This list should include each 

authorized individual member by name, function(s), scope or limitations, and the 

location at which each authorized individual’s functions are to be conducted. The 
10/01/15 AC 21-43A

Appendix E

E-2

PAH’s authorized procedures should conform to current FAA policy and, at a 

minimum, address the following:

E.3.1 A process for determining the number of individuals needed to support the company’s 

workload.

E.3.2 The specific functions, products, or articles for which the authorized individual will 

issue authorized release documents, and any locations where those services will be 

needed. This should include both PAH facilities and approved supplier locations.

E.3.3 The general knowledge, type and length of experience, and technical qualification 

requirements needed for a specific function, product, or article.

E.3.4 The PAH’s training and testing requirements, including initial, ongoing, and recurrent

testing and training, and the required frequencies. Training topics should include:

 Initial Engines, Propellers, and Articles Training, recurring every 36 months;

 Procedures for completing FAA Form 8130-3 Authorized Release Document;

 Complying with requirements of importing countries or jurisdictions when 

exporting U.S. products, articles, or parts; and

 Understanding and complying with regulations pursuant to 14 CFR part 21, subparts 

H and L.

E.3.5 The continuous oversight and monitoring of all authorized individuals and their

activities, regardless of location. This includes, for example, the scope of the oversight 

and its frequency.

E.3.6 Methods for maintaining adequate records for each authorized individual. This includes 

establishing a record retention period. The records should, at a minimum, contain the 

following information for each selected individual:

 Name,

 Date of birth,

 Experience,

 Verifiable references (technical and character),

 Training status,

 Scope of the authorization,

 Location(s) at which functions are to be conducted,

 Date of authorization,

 Appointment status,

 Expiration date of authorization (as appropriate), and

 Identification number of authorization (as appropriate).
10/01/15 AC 21-43A

Appendix E

E-3

E.3.7 A method for withdrawing an authorization from a supplier location.

E.3.8 Evidence of authorization. The method used should make it very clear to the PAH, the 

authorized individual, and the FAA who is authorized and the overall scope and 

limitations of their authorization.

E.3.9 A method for auditing the effectiveness of the overall authorized release 

document program.

E.3.10 A process for removing or revising the scope of an individual’s authorization.

E.3.11 The retention period for records related to the issuance of each authorized release 

document (that is, FAA Form 8130-3).

E.4 Completing FAA Form 8130-3.

Section 21.137(o) requires any PAH who chooses to issue authorized release 

documents, to have an established quality system procedure for completing authorized 

release documents.

E.4.1 These procedures should include requirements for completing FAA Form 8130-3 that 

meet FAA Order 8130.21 Chapters 1, 2, and 4. When establishing a procedure for 

completing the authorized release documents, a PAH should incorporate by reference 

any applicable procedures from FAA Order 8130.21. The latest revision of FAA 

Order 8130.21 will always have the most up-to-date instructions applicable to any

person with authority to complete authorized release documents. Blocks 13b., 13c., 

13d., 14b., 14c., and 14d. require information that is specific to each PAH. The 

following instructions should be included in the procedures for completing the 

authorized release documents:

E.4.1.1 Block 13.b. Authorized Signature. 

This space should be signed by an authorized person. Only a person 

authorized under a PAH’s approved quality system that includes the 

procedures pursuant to § 21.137(o) may sign this block.

E.4.1.2 Block 13.c. Approval/Authorization No. 

Enter the approval or authorization number of the authorized representative

or organization identified in Block 13b. Also, for a PAH, enter the 

applicable production approval number (for example, PT1234CE or 

PQ1234NM).

E.4.1.3 Block 13.d. Name (Typed or Printed).

Enter the typed or printed name of the authorized representative or 

organization whose signature appears in Block 13b.
10/01/15 AC 21-43A

Appendix E

E-4

E.4.1.4 Block 14.b. Authorized Signature. 

This space should be signed by an authorized person. Only a person 

authorized under a PAH’s approved quality system that includes the 

procedures pursuant to § 21.137(o) may sign this block.

E.4.1.5 Block 14.c. Approval/Authorization No. 

Enter the approval/authorization number of the authorized 

representative/organization identified in Block 13b. Enter the applicable 

production approval number (for example, PT1234CE or PQ1234NM).

E.4.1.6 Block 14.d. Name (Typed or Printed). 

Enter the typed or printed name of the authorized representative or 

organization whose signature appears in Block 14b.

E.4.2 If a PAH manufactures a product or article for export, the PAH is responsible for 

ensuring that it complies with applicable bilateral agreements and with §§ 21.331 

and 21.335. AC 21-2, Complying with the Requirements of Importing Countries or 

Jurisdictions When Exporting U.S. Products, Articles, or Parts, provides information 

and guidance regarding the requirements of importing countries or jurisdictions.

E.4.2.1 If an exporter cannot comply with § 21.331(a) and (c), it must notify the 

FAA before issuance of FAA Form 8130-3. The FAA will request a written 

statement from the importing CAA indicating the CAA’s acceptance of the 

aircraft engine, propeller, or article. Governmental authorities will transmit 

and receive requests for acceptance before export. The FAA will notify the 

exporter of the CAA’s written response, at which point the PAH can issue 

the export documentation.

E.4.2.2 As provided in § 21.331(b) and (d), if the CAA of an importing country or 

jurisdiction accepts any deviations from § 21.331(a) and (c), the PAH must 

list as exceptions any differences between the aircraft engine, propeller, or 

article on the approval or authorized release document. All deviations as 

exceptions should be noted in the form’s “Remarks” block, referencing the 

importing CAA’s written statement of acceptance. The form also should be 

accompanied by a copy of the importing CAA’s statement of acceptance.
10/01/15 AC 21-43A

Appendix F

F-1

APPENDIX F. PRODUCTION APPROVAL HOLDER/SUPPLIER ARRANGEMENT.

The following list comprises elements typically found in the arrangement between the PAH and 

the supplier, if applicable. Guidance on the content of each element is provided, but this is not 

intended to be comprehensive.

NOTE: The supplier arrangement may indicate whenever the PAH finds one or 

more of the elements to be inapplicable.

F.1 Scope.

F.1.1 Identify articles to be provided by the supplier and associated supplier facilities.

F.1.2 Identify any limitation(s) defined by the PAH.

F.2 PAH Evaluation.

Stipulate that the supplier is acting under the PAH quality system and that all of the 

corrective actions requested by the PAH will be implemented.

F.3 Implementation Procedures.

Attach a quality plan or equivalent documentation to the contract.

F.4 Internal Quality System.

F.4.1 Identify methods for the PAH to evaluate the internal quality system of the supplier.

F.4.2 Describe the interface between the PAH’s quality systems and the supplier in the 

quality plan.

F.5 Design Data and Configuration Control.

F.5.1 Identify the design data package provided by the PAH, including all pertinent data 

required for the supplied article(s) to be identified, manufactured, inspected, used, 

and maintained.

F.5.2 Establish procedures for managing design changes.

F.6 Manufacturing Data.

Identify the manufacturing data developed by the supplier, if any, based on the design 

data submitted by the PAH. (Refer to paragraph F.5 of this appendix.)
10/01/15 AC 21-43A

Appendix F

F-2

F.7 Test and Inspections (Including Incoming).

F.7.1 Identify procedures to define the necessary test and inspection processes—

 To ensure and determine the conformity of the supplied article(s) during the 

supplier’s manufacturing activities, and on receipt by the PAH.

 To be performed for qualification of the supplier (including first article inspection) 

and related documentation requirements.

F.7.2 The PAH may rely on inspections/tests performed by a supplier, provided:

 Personnel responsible for these tasks satisfy the quality standards of the PAH, 

 Quality measurements are clearly identified, and

 The records or reports showing evidence of conformity are available for review 

and audit.

F.8 Identification and Traceability.

Stipulate that the PAH flows-down to the supplier and any subtier suppliers’

identification and traceability requirements.

F.9 Supplier Personnel Competence.

Identify the PAH’s requirements for the competence of supplier personnel (that is, 

production, inspection, and quality staff) based on qualifications, education, training, 

skills, and experience.

F.10 Calibration. 

F.10.1 Ensure calibration is traceable to a national standard acceptable to the FAA.

F.10.2 Ensure certificates are submitted where suppliers perform calibration services for the 

PAH.

F.11 Handling, Storage (Segregation), and Packing.

F.11.1 Identify requirements from the PAH concerning handling, storage, packing, and 

shelf life to be followed by the supplier. 

F.11.2 Address segregation of approved and non-approved articles as well as nonconforming 

articles.

F.12 Record Completion and Retention.

Identify procedures for document management and retention by the supplier.
10/01/15 AC 21-43A

Appendix F

F-3

F.13 Nonconformities.

Identify procedures for handling and documenting nonconformities between the PAH 

and the supplier, addressing—

 The identification, documentation, and classification (major, minor) 

of nonconformities.

 The disposition of nonconformities and the subsequent segregation and control of 

the nonconforming articles. This includes the secure disposition of scrap articles to 

avoid reuse (refer to paragraph F.11 of this appendix). 

Note: The disposition of nonconformities is generally the responsibility of the 

design approval holder. Nevertheless, it may be acceptable to the FAA for the 

design approval holder to delegate the approval of nonconformities to persons 

located in the organization of the PAH and its suppliers, thus acting as part of the 

design approval holder.

 The immediate notification to the PAH on nonconforming articles that have left the 

supplier’s quality system.

F.14 Conformity Document.

Specify the document by which the supplier certifies conformity to the applicable 

design data to the PAH.

F.15 Provisions for Direct Delivery/Direct Shipment.

Identify the authorization and the requirements for direct delivery/direct shipment to 

end users from the supplier’s facilities, based on relevant regulatory requirements. (For 

direct shipment requirements, refer to chapter 3, paragraph 3.6.11.5 of this AC.)

F.16 Assistance for Continued Airworthiness.

Identify procedures for supplier assistance to the PAH for continued airworthiness, 

including methods to notify and act on notification of already delivered nonconforming 

articles, ensuring proper investigation and implementation of corrective action.

F.17 Subtier Suppliers.

F.17.1 Specify the conditions under which the supplier may subcontract to or obtain supplies 

from a third party.

F.17.2 Specify procedures for:

 A supplier to flow-down the FAA and PAH requirements to subtier suppliers.

 Notification to the PAH in case of further subtier supplier activity and/or significant 

problems encountered during manufacturing.
10/01/15 AC 21-43A

Appendix F

F-4

F.18 Significant change to the Quality System.

Require the PAH be notified, as soon as practical, of any changes to the supplier system 

(evaluated by the PAH) that may affect the quality of the supply.

F.19 Failures, Malfunctions, and Defects.

Specify to the supplier the necessary requirements for reporting failures, malfunctions, 

and defects to ensure the PAH can comply with FAA requirements.

F.20 Access for the PAH and FAA.

Ensure access to, and cooperation of, all involved facilities in the supply chain for the 

PAH and FAA. This will enable—

 The PAH to verify compliance with the PAH-supplier arrangement and to assess the 

quality of the contracted articles, and

 The FAA to investigate the PAH’s compliance with the applicable requirements at 

the supplier level.

F.21 Language.

Identify the language to be used for the exchange of information (including all working 

documents, such as technical and quality data) that is acceptable to the FAA.

F.22 Identification of Responsibilities.

Identify responsible office/function/positions in charge for all elements of the 

PAH-supplier arrangement.

F.23 Duration of the Supplier Arrangement.

Identify the duration of the supplier arrangement in terms of time and/or quantity of 

supply to be delivered to the PAH.
10/01/15 AC 21-43A

Appendix G

G-1

APPENDIX G. PRODUCTION CERTIFICATION: 

MULTINATIONAL/MULTICORPORATE CONSORTIA.

G.1 Purpose.

This appendix provides information and criteria for evaluating and approving the 

quality system of a multinational or multicorporate consortium seeking a production 

certificate (PC). This appendix does not apply to a type certificate (TC) holder that 

enters into a licensing agreement with a manufacturer holding a PC at the time of 

license. The Federal Aviation Administration (FAA) does not consider such a licensing 

arrangement the formation of a PC. PC extensions are addressed in AC 21-24, 

Extending a Production Certificate to a Facility Located in a Bilateral Airworthiness 

Agreement Country.

G.2 Discussion.

A multinational/multicorporate consortium consists of a United States manufacturer(s) 

and a manufacturer(s) located outside the United States that have agreed to form a 

single company for production of a particular product. A consortium company usually 

exists in name only, in that it does not physically manufacture a product in one location.

The consortium company retains responsibility for the design and quality of the product 

for which the PC has been issued. However, the consortium company may assign the 

manufacturing task to other partner companies or suppliers located domestically or in 

combination with manufacturers located outside the United States.

G.3 Requirements.

G.3.1 Section 21.135 requires any applicant for a PC to provide the FAA with a document 

describing how its organization will ensure compliance with subpart G, Production 

Certificates. The FAA considers a multinational or multicorporate consortium company 

seeking a PC to be the applicant. The applicant must comply with the organizational 

requirements outlined in section 1.10 of this AC. The accountable manager identified 

in the organization document serves as the consortium company’s primary contact with 

the FAA office responsible for issuance of the production approval, or for certificate 

management of the production approval holder.

G.3.2 Section 21.137, Quality system, requires a PAH to establish and describe in writing a 

quality system that ensures each product or article conforms to its approved design and 

is in a condition for safe operation. The FAA considers the consortium company to be 

the applicant, and the partner companies to be suppliers.

G.3.3 The consortium company will be named on the PC, along with the consortium 

company address (possibly a corporate office) and the address(es) of the principal and 

subordinate manufacturing facilities. Extension of a PC to facilities located outside the 

United States may be authorized when certain criteria are met, as listed in AC 21-24.
10/01/15 AC 21-43A

Appendix G

G-2

If a PC is extended to a facility located outside the United States, the FAA remains 

responsible for certificate management.

G.3.4 In the case of multinational/multicorporate consortia, if a partner company or supplier 

has an FAA-approved quality system for its own product, the PC applicant is still 

required to have an independent system meeting the requirements of subpart G.

G.3.5 A PC applicant functioning as a corporate entity, distributor, or assembler will have a 

viable means of ensuring all articles, processes, procedures, and completed products are 

properly inspected for conformity to the approved type design.

G.4 Quality System Documentation.

G.4.1 The applicant for a PC is required by the rule to establish to the FAA’s satisfaction that 

its quality system and procedures meet the requirements of § 21.137 before a PC 

is issued.

G.4.2 The quality system data will clearly specify that all facilities (domestic and outside of 

the United States) will be made accessible to the FAA and to the CAA acting on behalf 

of the FAA. If articles or services are provided by a supplier or manufacturer in a 

country outside the United States, accessibility includes review of the data (drawings, 

specifications, procedures, and inspection records) and equipment pertinent to the 

product or articles produced under the PC.

G.4.3 The quality system manual proposed by the applicant will contain sufficient 

details establishing the quality system organization and procedures as a separate and 

independent entity (rather than simply incorporating by reference the quality systems 

of its partner companies). This does not preclude the use of, or reference to, applicable 

portions of a partner company’s quality system, but ensures the applicant’s system will 

be evaluated on its own merits. This also enables the FAA to conduct surveillance to 

ensure compliance with the regulations.

G.5 Quality Organization and Authority.

G.5.1 The applicant’s senior quality manager will have direct access to the consortium’s 

senior management.

G.5.2 The applicant’s quality system organization will have an independent management 

organization. This organization will establish departmental control over the partner 

companies regarding the quality of the jointly produced product. The individuals chosen 

to fill these management positions will have a clearly defined and separate allegiance to 

the applicant’s top management, rather than to any company for which they have 

worked or for which they are currently working.

G.5.3 The responsibility and authority of the employees in the consortium’s management 

organization will be clearly defined in the quality system data. This includes the 
10/01/15 AC 21-43A

Appendix G

G-3

consortium’s relationship to the quality and production organizations of the 

partner companies.

G.5.4 The applicant may propose to assign inspection authority to a limited number of its 

employees to ensure the quality of products being produced. While no minimum 

number of employees can or should be specified by the FAA, the viability of the 

proposed quality system procedures will be assessed with respect to the number of 

employees available to implement the system.

G.5.5 It is particularly important to establish accountability for compliance with § 21.137 in 

the case of a multinational consortium. This is because the responsibilities of suppliers 

outside the United States, regarding their other products under their own CAAs, may be 

inconsistent with those required by § 21.137. Compliance responsibility for the 

consortium product will rest with the PC holder. This direct responsibility will be 

understood by the applicant’s management and the management of the supplier, and be 

described in the quality manual. 

G.5.6 The fact that the actual manufacture of the applicant’s product may take place in a 

country outside the United States does not affect the applicability of FAA regulations 

and orders regarding the management and surveillance of the PC holder.
10/01/15 AC 21-43A

Appendix H

H-1

APPENDIX H. ADVISORY CIRCULAR FEEDBACK FORM

If you find an error in this AC, have recommendations for improving it, or have suggestions 

for new items/subjects to be added, you may let us know by (1) emailing this form to 

9-AWA-AVS-AIR500-Coord@faa.gov or (2) faxing it to the attention of the AIR Directives 

Management Officer at 202-267-3983. 

Subject: ____________________________ Date: ____________________ 

Please check all appropriate line items:

 An error (procedural or typographical) has been noted in paragraph __________________ on 

page __________________________.

 Recommend paragraph ____________ on page ______________ be changed as follows:

 In a future change to this AC, please cover the following subject:

(Briefly describe what you want added.)

 Other comments:

 I would like to discuss the above. Please contact me.

Submitted by: __________________________________ Date: ________________________