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Legal Interpretations

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Hofmann-Vexa 2014

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Summary

The Question

May an installer treat a reproduction aircraft identification plate sold on an internet auction site as eligible for installation on a type-certificated product?

Background

Vexa, Inc. reported that high-quality reproduction aircraft identification plates were being offered for sale on an internet auction site and asked how an installer determines whether such a plate is eligible for installation on a type-certificated product.

The FAA’s Interpretation

No. A plate is eligible only if produced by the original equipment manufacturer or otherwise under FAA-approved procedures; 14 CFR 21.8 and 14 CFR 21.9 control production of such articles. A reproduction sold on an auction site presumably comes from neither the manufacturer nor an FAA-approved source such as a PMA holder, so it cannot show the aircraft conforms to its type design, and a nonconforming aircraft is ineligible for a standard airworthiness certificate.

Requester
Hofmann
Organization
Vexa
Issued
November 17, 2014
Subjects
Maintenance & Repair Stations · Aircraft & Parts Certification

Regulations Cited

  • 14 CFR Part 12
  • 14 CFR 21.8
  • 14 CFR 21.9
  • 14 CFR 21.183
  • 14 CFR Part 65
  • 14 CFR Part 145

Unreadable text from the scan (such as a barcode or stamp) is left out of the text below; the original letter shows it exactly.

Page 1

U.S. Deportment
of Transportation
Federal Aviation
Administration
NOV 17 2014
J .R. Hofinann
Vexa, Inc.
P.O. Box 1222
Colleyville, TX 76034
Re: Identification Plates Not Produced by an Original Equipment Manufacturer
Dear Mr. Hofmann:

This letter responds to your July 8, 2014, request for a legal interpretation of the Federal Aviation Administration (FAA) regulations governing identification plates. In your letter, you state that "[h]igh quality reproduction aircraft identification plates ... are being offered for sale on an internet auction site." You then ask how an installer determines whether a reproduction plate is "eligible for installation on a type certificated product." For the reasons described below, an identification plate is only eligible for installation on a type certificated product if the plate is produced by the original equipment manufacturer or otherwise in accordance with FAA-approved procedures. Because your letter provides no indication that these reproductions meet FAA requirements, an installer may not determine that the reproductions are eligible for installation.

FAA regulations restrict who may fabricate and install a replacement identification plate. With respect to fabrication, § § 21.8 and 21.9 control the production of articles for installation on type-certificated aircraft. Section 21.8 states that any part required to be approved by the Administrator must be approved for production "[u]nder a PMA; ... [u]nder a TSO; ... [i]n conjunction with type certification procedures for a product; or ... [i]n any other manner approved by the FAA." The FAA typically relies on the original manufacturer to produce and install identification plates on its aircraft. By doing so, the manufacturer effectively declares that the aircraft conforms to its type design. If the manufacturer refuses to issue or mark an aircraft with an identification plate, the FAA will assume the aircraft does not conform. An aircraft owner or operator should, therefore, first seek a replacement from the aircraft's original manufacturer. In the event that an identification plate is lost, stolen, or destroyed, the owner or operator of an aircraft without an identification plate may discover that the aircraft's original manufacturer is no longer in business or is otherwise unable or unwilling to produce a replacement plate for reasons unrelated to the condition of the aircraft. In such cases, paragraph 6(i)(3) of FAA Advisory Circular 45-2D, Identification and Registration Marking, provides a means of compliance for an owner or operator to "buy identification plates from an approved source after going through the process" of contacting the local Flight Safety Standards District Office or Manufacturing Inspection District Office for assistance and approval in obtaining a replacement plate.

A reproduction identification plate sold on an online auction website would presumably be produced by neither the manufacturer nor an FAA-approved alternative source (such as a PMA holder for that article), and therefore it could not indicate to the FAA that an aircraft conforms to its type design. An aircraft that does not confonn to its type design is ineligible for a standard airworthiness certificate. 1

This response was prepared by Benjamin Jacobs, an attorney in the International Law, Legislation, and ReE:,rulations Division of the Office of the Chief Counsel, and was coordinated with the Aircraft Engineering Division (AIR-100) of the Aircraft Certification Service. If you need fmther assistance, please contact our office at (202) 267-3073. 1 Note also § 21.183(d) sets out numerous requirements for obtaining a standard airworthiness certificate for a used aircraft. For example,§ 21.183(d)(l) requires any applicant to present "evidence to the FAA that the aircraft conforms to its [approved] type:design." Section 21.183(d)(2) requires the aircraft to be inspected and found airwortliy by either " [t}he manufacturer ... ; [t)he holder of a repair station certificate as provided in Part 145 . .. ; [t)he holder ofa mechanic certificate as authorized in Part 65 .. .; [or] the holder ofa certificate issued under part 12 l of this chapter, ... having a maintenance and inspection organization appropriate to the aircraft type." Finally,§ 21.183(d)(3) requires the FAA to find, "after inspection, that the aircraft confonns to [its] type design, and is in a condition for safe operation."

Regulations Referenced

14 CFR 21.814 CFR 21.914 CFR 21.18314 CFR Part 14514 CFR Part 65

Snapshot retrieved August 6, 2026.

Summary

The Question

May an installer treat a reproduction aircraft identification plate sold on an internet auction site as eligible for installation on a type-certificated product?

Background

Vexa, Inc. reported that high-quality reproduction aircraft identification plates were being offered for sale on an internet auction site and asked how an installer determines whether such a plate is eligible for installation on a type-certificated product.

The FAA’s Interpretation

No. A plate is eligible only if produced by the original equipment manufacturer or otherwise under FAA-approved procedures; 14 CFR 21.8 and 14 CFR 21.9 control production of such articles. A reproduction sold on an auction site presumably comes from neither the manufacturer nor an FAA-approved source such as a PMA holder, so it cannot show the aircraft conforms to its type design, and a nonconforming aircraft is ineligible for a standard airworthiness certificate.

Requester
Hofmann
Organization
Vexa
Issued
November 17, 2014
Subjects
Maintenance & Repair Stations · Aircraft & Parts Certification

Regulations Cited

  • 14 CFR Part 12
  • 14 CFR 21.8
  • 14 CFR 21.9
  • 14 CFR 21.183
  • 14 CFR Part 65
  • 14 CFR Part 145