Methodology
Where the records come from
Every Airworthiness Directive here restates a specific Federal Register document, fetched from the Federal Register's public API. Each record card leads with that document number and its Federal Register citation (volume and page), copied from the live API. If a row has not yet been filled, the card says “Citation not yet captured” instead of inventing a volume and page. The airworthiness-directive number and the published/effective dates sit in the information block under the headline. Every card links directly to the official text. Service Bulletins are individually sourced from the manufacturer's own published pages; we show the number, title and date only, and link to the manufacturer — SB body text is the manufacturer's copyrighted material and is never reproduced here.
Re-verification, and what the drift flag means
Stored AD records are re-checked against the live Federal Register API. Each card shows the date of its last successful check — or says plainly that one hasn't succeeded yet. When a stored record no longer matches the live official document, the card carries a visible red drift notice and the official link remains the authority. A failed check is never displayed as a successful one.
What the status labels mean
"Not yet effective" means the record's stated effective date is in the future. "Superseded by" means a later AD of the same subject is also on this page and is linked from the chip; "Supersedes" is the matching chip on that later AD, so the two read as one connected lineage rather than two unrelated cards. A correction notice docks inside its AD's card as a collapsible drawer labelled "N corrections to this AD" — it is not an additional requirement and does not change the AD number or its effective date. None of these labels is a determination that any specific aircraft or engine is, or is not, in compliance — under 14 CFR §91.403 and §91.417 that responsibility rests with the owner/operator, and the official sources linked on every card govern.
What we never do
We do not determine airworthiness. We do not sell parts. We never invent a record — where our index ends, the page says so and points at the official source instead of guessing. Coverage is growing and the coverage index is the honest statement of what is indexed today. PMA holdings are counted on /pma; individual PMA part rows stay unpublished until the parser is ratified and that row has a DRS document link.
Found an error?
Accuracy is the entire point of this site. Report it — reports go straight to the operator.
Who runs this site
Operated by AircraftDirectives — a plain operator and site name, not a company.