Is AD 2021-09-01 a recurring Airworthiness Directive?

No — AD 2021-09-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2021-09-01 apply to?

AD 2021-09-01 applies to Airbus — models A320-271N, A321-211, A321-271N, A320, A321. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2021-09-01

one-time

Official AD 2021-09-01 · FR doc 2021-08577 · 2021-04-26 · airframe

Airworthiness Directives; Airbus SAS Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Airbus SAS Model A320-271N, A321-211, and A321-271N airplanes. This AD was prompted by reports of missing overhead stowage compartment (OHSC) X-fixation brackets or brackets that were incorrectly installed during assembly. This AD requires a special detailed inspection of the OHSC X-fixation brackets for missing or incorrectly installed brackets, and installation or replacement the OHSC X-fixation brackets if necessary; or modification of each OHSC; as specified in a European Union Aviation Safety Agency (EASA) AD, which will be incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-09-01 applies to

MakesAirbus

ModelsA320-271N, A321-211, A321-271N, A320, A321

Applies to airplanes as identified in EASA AD 2020-0122, dated May 29, 2020.

Whether AD 2021-09-01 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.

Date — When the work was done.

Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.

Signature & certificate — The A&P/IA who returned it to service, with certificate number.

Is AD 2021-09-01 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.