Aircraft Part Numbers: Identify, Verify, and Source Correct Parts

Aircraft Part Numbers: Identify, Verify, and Source Correct Parts

Aircraft part numbers are the unique identifiers assigned by manufacturers to every component, from structural pieces to avionics. The number conveys the part’s design, revision, and applicable configurations, making it essential for traceability, replacement, and regulatory compliance. American Aviation Parts maintains a searchable database of part numbers, helping you locate the correct item in the Airframe Parts catalog, confirm it matches your aircraft, and obtain the necessary documentation.

What is an aircraft part number and how is it formatted?

An aircraft part number is a manufacturer‑issued code that uniquely identifies a specific component. Formats vary—some use dashes (e.g., 12345‑001), others include suffixes for revisions (e.g., 12345‑1A). The exact punctuation must be retained because each variation can represent a different part.

Where can I find the official part number for a component?

The official number appears on the component’s label, the Illustrated Parts Catalog (IPC), or the aircraft’s maintenance manual. You can also locate it in the Avionics or Alternators category pages, where part numbers are listed alongside product descriptions.

How do I determine if a part number is superseded or has an alternate?

Manufacturer service bulletins and the IPC indicate superseded numbers and their replacements. Cross‑reference tables in the catalog show alternate part numbers. When in doubt, consult the Manufacturer Authorizations page for verified equivalencies.

What documentation should accompany a part number for verification?

For new or overhauled parts, an FAA Form 8130‑3, a PMA approval letter, or an OEM certification tag confirms airworthiness. Serviceable used parts should have a current inspection sticker and a traceability record. American Aviation Parts can provide copies of the required documents upon request. For example, the Guardian Instrument Panel Flush Mount For iPad Mini includes its part number and accompanying 8130‑3 tag.

How can I verify that a part number matches my aircraft model and configuration?

Check the aircraft’s maintenance manual for the applicable part number list, then compare serial numbers, installed equipment, and any applicable STCs. The Aviation Tires category illustrates how tire part numbers differ by aircraft type and load rating, a good example of configuration‑specific numbering.

Are there differences between OEM, PMA, and aftermarket part numbers?

OEM numbers are issued by the original equipment manufacturer. PMA numbers are approved by the FAA for aftermarket production and may differ in format. Aftermarket parts often have their own distinct numbers. Always verify that the part’s documentation matches the required approval for your aircraft.

What steps should I take before ordering a part based on its number?

1. Confirm the exact number, including dashes and suffixes.
2. Verify applicability with your aircraft’s AMM or IPC.
3. Request the current 8130‑3 or equivalent approval document.
4. Compare the part’s condition (new, overhauled, serviceable) with your needs. The Lycoming Superior Gasket Set page shows condition listings as an example.
5. Use a trusted supplier—American Aviation Parts can supply the part and the required paperwork.