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Airworthiness Directive 2022-21-15

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Official AD 2022-21-15 · FR doc 2022-24370 · 2022-11-09 · airframe

Airworthiness Directives; Diamond Aircraft Industries GmbH Airplanes

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain Diamond Aircraft Industries GmbH (DAI) Model DA 42, DA 42 NG, and DA 42 M-NG airplanes. This AD is prompted by mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as a loose rudder T-yoke axle nut. This AD requires replacing the rudder T-yoke axle with an improved rudder T-yoke axle. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2022-21-15 applies to

MakesDiamond Aircraft Industries Gmbh
ModelsDA 42, DA 42 NG, DA 42 M-NG
Serial-conditional — narrows to serials 42.004–42.391, 42.394–42.396, 42.399–42.402, 42.405–42.416, 42.427–42.427, 42.AC001–42.AC135, 42.AC137–42.AC145, 42.AC148–42.AC148, 42.AC150–42.AC152, 42.MN001–42.MN034, 42.MN037–42MN042, 42.MN050–42.MN055, 42.MN057–42.MN057, 42.MN058–42.MN058, 42.MN100–42.MN103, 42.N001–42.N067, 42.N100–42.N250, 42.N300–42.N381, 42.N391–42.N391, 42.NC001–42.NC004, 42.NC006–42.NC008.

Whether AD 2022-21-15 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 2022-21-15 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.