23 3D-printed cockpit accessories: when missing paperwork alone is enough to ground a part

Yes — paperwork alone can be enough to have a part quarantined pending an eligibility determination, and the FAA just proved it on the most banal objects imaginable. On August 18, 2026, the agency issued Unapproved Parts Notification 2026-AAE-EHL-20250507-177, covering 23 3D-printed cockpit accessories sold on Etsy. The charge is precise: articles produced and sold "without approval and authorization from the FAA", which "may not meet FAA production approval requirements". Cup holders, yoke grips, sun visors: the notice alleges no failure and no incident. It lists no structural part either. The issue is approval status, not a broken certificate file — and at receiving, the missing paperwork is the only visible symptom. That is exactly why this case matters.

What the FAA notification says — and what it does not

Everything in this section comes from the notification itself.

Between May 2024 and August 2025, Michael Graham, doing business as MadeByMike3D, produced and sold articles for installation on FAA type-certificated aircraft "without approval and authorization from the FAA". The notification's stated purpose: the referenced articles "may not meet FAA production approval requirements". The articles were listed on Etsy.com, there is no evidence they were produced by an FAA-approved manufacturer, and they are not marked in accordance with 14 CFR 45.15. The notification's table lists 23 articles. Custom-designed cup holders for the Beechcraft Bonanza, Debonair and Grumman aircraft sit alongside ergonomic yoke grips, sun visors, defrost vent components and a mic caddy.

The FAA's recommendations are procedural, not alarmist — and their scope is worth quoting exactly. Owners, operators, manufacturers, maintenance organizations and parts suppliers and distributors are encouraged to "inspect their aircraft and/or aircraft parts inventory for the referenced articles". The quarantine sentence is scoped to stock: articles "found in existing inventory" should be "quarantined to prevent installation until a determination can be made regarding their eligibility for installation". For articles already installed, the notice asks for information on the discovery and on "the actions taken to remove the articles from the aircraft and/or parts inventory". Contact: the FAA Vandalia Certificate Management Section (9-avs-866cms@faa.gov).

What the notification does not say is just as important. It alleges no in-service failure. It alleges no incident. Its table contains no engine, propeller, structural or aerodynamic component. AVweb's coverage states the point plainly: the FAA did not report that any listed product had failed or caused an incident. The strongest journalistic fact of this story is a negative found in one document: the notice reports no failure and no incident. Absence of signal is not proof of absence — but the paperwork was missing, and that alone was enough.

One transparency note before going further. This article presents the FAA's position as published in the notification and the trade coverage cited. No public response from the seller appears in the record we reviewed, and we did not contact the seller or Etsy before publication. The seller's side is therefore not represented here.

Why a cup holder can be an unapproved part

The legal chain is short, and every link is about documentation, not plastic.

• Type-certificated aircraft must conform to their type design. That is the principle the notification invokes: anything installed on the aircraft is part of that conformity question.
• Producing for installation is regulated, whoever you are. Under 14 CFR 21.9(a), a person who knows — or should know — that a replacement or modification article is reasonably likely to be installed on a type-certificated product may not produce it outside an enumerated list: type certificate, FAA production approval, standard part, commercial part, owner-produced article, repair-consumed fabrication, or another FAA-approved manner.
• Owner-produced is for your own aircraft, not for sale. Section 21.9(a)(5) lets an owner or operator produce an article for maintaining or altering that owner or operator's own product. Section 21.9(b) closes the loop: producing such articles for sale, and representing them as suitable for a type-certificated product, is not allowed without approval. A cup holder you print for your own Bonanza is one thing. A cup holder sold on Etsy to any Bonanza owner is another.
• Approval has a name: PMA, and it leaves marks. The Parts Manufacturer Approval under 14 CFR 21.303 requires design data, test reports and a quality system. Under 14 CFR 45.15, each PMA article must be permanently and legibly marked with the holder's identification, the part number, and the letters "FAA-PMA". Marking is not decoration: it is how a part carries its paperwork on its skin.

None of this is an indictment of 3D printing. Approved additively manufactured parts fly today — the same week's coverage included a certified titanium latch produced for Lufthansa Technik, made by Materialise inside a certified production framework. The technology is not the variable. The approval status is.

A receiving checklist for owners and A&Ps

You run a shop, manage an aircraft, or receive parts. These checks work for a cup holder as well as for a compressor blade.

1. Ask the question the law asks. Is this article reasonably likely to be installed on a type-certificated product? If yes, the seller needed an approval route under 21.9(a) — marketplace convenience changes nothing.
2. Look for the mark before the paperwork. A PMA article must carry the holder's identification, part number and the letters "FAA-PMA" (14 CFR 45.15). An unmarked part claiming PMA status has already failed a check you can do with a flashlight.
3. Match the paperwork to the approval route. Production approval, TSO, standard or commercial part status: each route has its own evidence. "It came with a receipt from an online marketplace" is not on the list.
4. Know the owner-produced boundary. An owner-produced article under 21.9(a)(5) is legal for your own aircraft. The same article bought from someone else is not owner-produced for you — the exception follows the person, not the plastic.
5. Check the FAA's SUP notifications. The Suspected Unapproved Parts program publishes exactly this kind of notice. The quarantine recommendation is scoped to stock: an article from a UPN table found in your inventory is quarantined to prevent installation until eligibility is determined. An article already installed on an aircraft is a discovery to report — with the actions taken to remove it — to the certificate management section on the notice.
6. Quarantine beats disposal. The FAA's recommendation is to quarantine pending an eligibility determination. Some articles may regularize through a proper approval; the point is that installation waits for the determination, not the reverse.
7. Report what you find. The Vandalia Certificate Management Section asks for discoveries, identification means and removal actions. Unapproved parts stay in circulation when findings stay private.

The limits of what this proves

Three limits keep this analysis honest.

• No safety finding was made. The notification is about approval status, not demonstrated defect. The articles may be physically fine; that is not the question the FAA answered, and this article does not answer it either.
• Eligibility is not closed forever. The FAA recommends quarantine until a determination is made. An article on a UPN table is unproven, not eternally contraband.
• Approved routes vary by part. Whether a given accessory truly required a PMA can depend on its installation and certification basis. The notification treats these 23 articles as requiring approval; individual edge cases belong to the FAA, not to a blog post.

AeroCert's take

AeroCert's take: our corpus now has its three faces. AOG Technics was forged paperwork. GA Telesis was the doctrine for verifying paperwork. MadeByMike3D is the absence of paperwork — and it shows that verification must fail closed. When a certificate's SHA-256 hash is anchored at issuance by an authenticated issuer, the receiving question "does a verifiable certificate exist for this part, from this source?" has a binary answer. For the 23 articles in this notification, that lookup would have returned no in one query — no call to the seller, no interpretation of a PDF. Provided, that is, the issuers you rely on anchor their certificates at all. One honest limit: a registry proves that a specific certificate is anchored and intact. An empty result proves no universal absence — an approval issued outside the anchoring network would never appear in it. The fail-closed answer is only as strong as the adoption of the network behind it. Anchoring cannot make an unapproved part approved; within that network, it makes the absence of an anchored approval instantly visible. See how AeroCert works, or integrate verification into your own systems with the developer platform.

Sources

Primary sources:

• FAA Unapproved Parts Notification 2026-AAE-EHL-20250507-177, August 18, 2026: producer (Michael Graham d/b/a MadeByMike3D), sales period (May 2024 – August 2025), channel (Etsy.com), "without approval and authorization from the FAA", stated purpose that the articles "may not meet FAA production approval requirements", articles not marked per 14 CFR 45.15, the 23-article table (Bonanza, Debonair and Grumman cup holders, yoke grips, sun visors, defrost vents, mic caddy and similar accessories), the recommendations quoted in the body — inspection of aircraft and/or parts inventory, quarantine scoped to articles "found in existing inventory", reporting of discoveries and removal actions — and the Vandalia Certificate Management Section contact (9-avs-866cms@faa.gov).
• 14 CFR 21.9: replacement and modification articles — the closed list of lawful production routes (paragraph (a)), the owner-produced exception for one's own product (a)(5), and the prohibition on producing for sale and representing suitability without approval (paragraph (b)).
• 14 CFR 21.303: Parts Manufacturer Approval application — design data, test reports, inspections and quality requirements.
• 14 CFR 45.15: marking requirements — PMA articles must carry the holder's FAA-approved identification, part number and the letters "FAA-PMA".
• FAA Suspected Unapproved Parts (SUP) program: the notification channel referenced in the checklist.

Press coverage (secondary, context and corroboration):

• AVweb, August 21, 2026: the FAA did not report that any listed product had failed or caused an incident; the table contains no engine, propeller, structural or aerodynamic component; the PMA-versus-owner-produced framing.
• Aviation Pros, August 20, 2026 and Aero-News Network, August 25, 2026: trade coverage of the same notification; Aviation Pros reproduces the recommendation sentences verbatim, used to confirm their full wording.
• Fabbaloo, August 28, 2026: corroborates the count of 23 listed parts.
• 3D Printing Industry, August 24, 2026 and 3DPrint.com, August 28, 2026: a certified titanium latch produced by Materialise for Lufthansa Technik — the counter-example showing the technology is not the issue.