Is AD 2021-17-04 a recurring Airworthiness Directive?

No — AD 2021-17-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2021-17-04 apply to?

AD 2021-17-04 applies to Airbus Sas — models A321-211, A321-231, A321-232, A321. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2021-17-04

one-time

Official AD 2021-17-04 · FR doc 2021-18703 · 2021-08-31 · airframe

Airworthiness Directives; Airbus SAS Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Airbus SAS Model A321-211, -231, and -232 airplanes. This AD was prompted by a report of false drill starts found around the latch hook mounting holes of certain door frames of the fuselage due to erroneous manufacturing processes. This AD requires a one-time inspection of the area around the latch hook mounting holes of the forward and aft door frames to detect damage from false drill starts, and repair if necessary, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-17-04 applies to

MakesAirbus Sas

ModelsA321-211, A321-231, A321-232, A321

As identified in European Union Aviation Safety Agency (EASA) AD 2020-0222, dated October 14, 2020.

Whether AD 2021-17-04 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 2021-17-04 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.