AC 20-154A

Advisory circular · Guide for Developing a Receiving Inspection System for Aircraft Parts and Materials

Approved
July 3, 2024
Last reviewed
July 3, 2024
Family
AC 20-154 · 3 versions
Revision
A
14 CFR parts
21, 43, 45, 145

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed November 22, 2025.

Show pages 13–24

Appendix C C-8 C.3.18 Recei ving Inspection Area. An area where products and articles are initially received and evaluated to determine their airworthiness status and are inspected for conformity prior to acceptance into the serviceable stock area.

C.3.19 Serviceable Stock. Ar ticles that have been evaluated in accordance with the FAA-approved or accepted data and have been determined to be eligible for installation on type-certificated products.

C.3.20 Signature. An individual’s unique identification, used for accepting a product or article received or inspected under its receiving inspection system. A signature may be handwritten, in the form of an inspection stamp, electronic, or any other form specified to be acceptable under the receiving inspection system.

C.3.21 Supplier. 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 (§ 21.1).

C.3.22 Traceability. Th e ability to establish that a part or material was manufactured under part 21 or was previously determined to be maintained under part 43. Possible sources for making a traceability determination could be shipping tickets, invoices, parts markings

(i.e., PMA, TSOA), data plates, serial/part numbers, manufacturing production numbers, maintenance records (which could include logbook entries, serviceable tags, etc.), work orders, or any other means acceptable to make a sound determination of airworthiness.

Note: Caution should be exercised when receiving a “Certificate of Complia nce” that has a statement such as “document with traceability to the manufacturer available upon request.” This does not alone establish traceability to the PAH.

C.3.23 Vendor. Any person or business establishment engaged in the sale or transfer of parts for installation in appliances or type-certificated products.

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 contacting the Flight Standards Directives Management Officer at 9-AWA-AFB-120-Directives@faa.gov.

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