FAA flags 3D-printed cockpit parts; the real issue is documentation

Pre-buy inspections are standard practice for judging an aircraft's condition and value before purchase. One thing they can still miss is the use of unapproved parts. Meaning the most expensive surprise in a pre-buy isn't always an engine problem; it could be a cup holder. What the FAA's notice covers The FAA issued an Unapproved Parts notification on Aug. 18. The notice covers multiple 3D-printed cockpit and interior accessories that were made by Michael Graham, doing business as MadeByMike3D. The products were made and sold between May 2024 and Aug. 2025 and installed without FAA approval on certified aircraft including the Beechcraft Bonanza, Debonair and Grumman. The unapproved parts include: cup holders headset holders windshield shades yoke grips defroster vent components instrument panel storage inserts and other cockpit accessories The FAA recommends that owners and maintenance organizations inspect their aircraft and inventories for these parts, quarantine anything found in inventory to prevent installation, and report any parts found already installed, pending a determination of their eligibility. Why documentation is the real airworthiness question The concern is not because of what the parts do, as they are not operational or structural components. The FAA is instead concerned about whether they were produced and installed through approved channels. Airworthiness frequently depends on documentation as much as the physical part itself. Certified aircraft must conform to their approved type design, making conformity a basic airworthiness requirement. Undocumented parts create airworthiness questions, even if the parts do not affect how the aircraft flies. This can come up during events like annual and pre-buy inspections. While buyers often focus on things like engine time, avionics and maintenance history, undocumented parts and modifications can remain hidden until a detailed inspection begins. Even small issues found can change the aircraft's value, delay sales and create additional maintenance costs with required removal and replacement. Why it matters For Bonanza, Debonair, and Grumman owners, the notification is a reminder to review installed accessories carefully. For turboprop and business-jet buyers, the same lesson applies on a larger scale. Conformity issues rarely begin with dramatic modifications but instead are accumulated over the years. Minor interior and cockpit additions deserve the same documentation discipline applied to larger aircraft systems. The FAA notice serves as a reminder that even minor cockpit accessories can become airworthiness issues when documentation and installation eligibility are not properly maintained.