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Airworthiness Directive 2023-21-10

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Official AD 2023-21-10 · FR doc 2023-26381 · 2023-12-01 · airframe

Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain ATR--GIE Avions de Transport R[eacute]gional Model ATR42-500 and ATR72-212A airplanes. This AD was prompted by reports of loose fasteners and cracks in the horizontal stabilizer (HS) left- and right- hand leading edge lateral ribs, the box in between, the center box upper panel, and HS forward back-up fitting. This AD requires an inspection of the HS affected areas for discrepancies and applicable corrective action, 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 2023-21-10 applies to

MakesAtr
ModelsATR42-500, ATR72-212A, ATR42, ATR72

Applicability limited to airplanes identified in ATR Service Bulletin ATR42-55-0020 (dated March 2, 2023) for ATR42-500, or ATR Service Bulletin ATR72-55-1013 (dated March 2, 2023) for ATR72-212A, as applicable.

Whether AD 2023-21-10 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 2023-21-10 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.