Free AD library
Search FAA Airworthiness Directives
12,046 ADs from the Federal Register, laid out readably and filed under the aircraft, engines, propellers and equipment they name. Checked every hour. Free, no account.
Try 2011-10-09, seat rail, magneto or Cessna 172S.
12,046 ADs · 1,505 aircraft pages · 230 engine pages · 134 propeller and equipment makers · newest published October 14, 2026
New ADs
All new ADs7 filed for publication on October 19, 2026, on public inspection now.
- 2026-21-06Requires replacing Pb sensorsEngine fuel and control · EngineTo be published Oct 19, 2026Public inspection
- 2026-21-04Requires revising the ALS of the existing approved engine maintenance or inspection program, as applicable, to incorporate new or more restrictive tasks and limitations and associated thresholds and intervals for...EngineTo be published Oct 19, 2026Supersedes 2009-04-13Public inspection
- 2026-21-03Requires repetitive leak checks of certain fuel LPSOVs and replacement of an affected part if any discrepancy is detectedFuel · AirplaneTo be published Oct 19, 2026Public inspection
- 2026-20-16Requires performing a maintenance records check or inspection of the right engine to determine the part number of the left fan cowl and applicable on-condition actionsPowerplant · AirplaneTo be published Oct 19, 2026Public inspection
- 2026-20-15Requires updating the BMC SW, additional work, and an additional revision of the existing MEL for the engine bleed overpressure valve; as applicablePneumatic · AirplaneTo be published Oct 19, 2026Supersedes 2025-04-05Public inspection
- 2026-20-14Requires measuring the freeplay of the horizontal stabilizer pivot hinges and the jackscrew and applicable on-condition actionsStabilizers · AirplaneTo be published Oct 19, 2026Public inspection
- 2026-20-13Requires replacing PSU-mounted video monitors that do not have secondary retention lanyardsEquipment/furnishings · AirplaneTo be published Oct 19, 2026Public inspection
- 2026-20-09Requires rectifying the low clearance condition between the fuel line flexible coupling and the harness support bracket clip-nut, rectifying the low clearance condition between the fuel line flexible coupling and the...Wings · AirplaneOct 14, 2026
- 2026-21-01Elixir AircraftAirplaneOct 13, 2026
- 2026-20-11Requires removal from service of the affected LPC blades and replacement with a serviceable partTurbine engine compressor section · EngineOct 13, 2026
- 2026-21-02Requires repetitively accomplishing a play check of the affected louver box assembly and, depending on the results of the check, accomplishing corrective actionsAir conditioning system · RotorcraftOct 9, 2026
- 2026-20-12Requires removal from service and replacement of the HPT interstage seal with a part eligible for installationTurbine section · EngineOct 8, 2026
- 2026-20-10Flight controlsAirplaneSupersedes 2019-20-07Oct 8, 2026
What it does that DRS does not
- Lists ADs by what is on the aircraft
- The airframe model, the engine family, the propeller and the equipment maker, each on its own page, so a 172S owner does not have to know which ADs were issued to Textron, Cessna or Lycoming.
- Reads like the AD
- Applicability, the FAA's summary and the required actions, laid out as published, with what each AD replaced and what replaced it one click away.
- Shows new ADs a day early
- ADs appear when the FAA files them for publication, usually the day before the Federal Register prints them, and followers are emailed then.
Monthly roundups
Every AD published in a month, with the FAA's summary of each. See the months
Questions
- Is this the official record of Airworthiness Directives?
- No. The Federal Register document is the legal text, and the FAA's Dynamic Regulatory System (DRS) shows each AD's current status. This library republishes the Federal Register's text, laid out for reading, and links every AD to the original.
- How current is it?
- It checks the Federal Register every hour. ADs are usually on the Federal Register's public-inspection desk the day before they are published, so most appear here, marked as to be published, a day before their official publication. Emergency ADs are sent to owners before they are published at all, so they can appear here days after the owners received them.
- How do you decide which ADs are listed for an aircraft?
- By the model designations in each AD's text: an AD naming the 172S is listed on the Cessna 172S page. That finds ADs worth reading, not ADs that apply. Serial number ranges, installed equipment and part numbers decide applicability, and that is a mechanic's call. An AD written only for a part number names no model and is found by searching for the part.
- Can I get an email when a new AD is published?
- Yes. Every aircraft, engine, propeller and equipment page has a follow box: give an email address, click the confirmation link, and each new AD filed on that page is emailed the day the FAA files it. No account, and every email has a link that stops them.
- Can I use the data?
- Yes. The text is a US government work. Each page downloads as CSV, there is an RSS feed of new ADs, and a JSON API that needs no key. A link back is appreciated, not required.