Is AD 2019-21-10 a recurring Airworthiness Directive?

No — AD 2019-21-10 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2019-21-10 apply to?

AD 2019-21-10 applies to Airbus — models A321-111, A321-112, A321-131, A321-211, A321-212, A321-213, A321-231, A321-232. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2019-21-10

one-time

Official AD 2019-21-10 · FR doc 2019-24994 · 2019-11-19 · airframe

Airworthiness Directives; Airbus SAS Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for all Airbus SAS Model A321-111, -112, -131, -211, -212, -213, -231, and -232 airplanes. This AD was prompted by a quality control review, which determined that the wrong aluminum alloy was used to manufacture several structural parts. This AD requires a one-time eddy current conductivity measurement of certain structural parts of the outer flaps to determine if the incorrect alloy was used, and replacement if necessary, as specified in a European 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 2019-21-10 applies to

MakesAirbus

ModelsA321-111, A321-112, A321-131, A321-211, A321-212, A321-213, A321-231, A321-232, A321

Whether AD 2019-21-10 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 2019-21-10 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.