Four deterministic steps, all on public FAA data.
We pull the AD final rule from the Federal Register API and extract its (c) Applicability paragraph — the legal statement of which make/model/serials are affected.
We structure it into per-model serial windows (S/N 34-7250001 through 34-7450220), serial-by-Service-Bulletin references (serials as identified in Piper SB 1413), and EXCEPT carve-outs. Serial-by-reference ADs are flagged, never asserted.
For each affected model we query the FAA AircraftInquiry registry for every US-registered tail — N-Number, serial, owner, state — and test each serial against the AD windows.
| Band | Meaning |
|---|---|
| HIGH | Model matches and the serial is inside an inline AD serial window. |
| MEDIUM | Model matches and the AD applies to all serials, or gates serials by an external SB we can't read (serial-conditional — confirm against that SB). |
| LOW | Model-family match only or serial unparseable. |
Tails provably outside every AD window are dropped. Over-include = a wasted call; under-include = a missed prospect — so we band, we don't guess.
FAA AD Roster · Real FAA data (Federal Register Part-39 + AircraftInquiry registry). Sales-intelligence only, not an airworthiness determination — confirm per tail with an A&P/IA. · x402 · llms.txt