Is AD 05-21543 a recurring Airworthiness Directive?

Yes — AD 05-21543 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 05-21543 apply to?

AD 05-21543 applies to Mitsubishi — models YS-11A-200, YS-11A-300, YS-11A-500, YS-11A-600. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 05-21543

recurring

AD 05-21543 · 2005-11-01 · airframe

Airworthiness Directives; Mitsubishi Model YS-11 Airplanes, and Model YS-11A-200, YS-11A-300, YS-11A-500, and YS-11A-600 Series Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to certain Mitsubishi Model YS-11 airplanes, and Model YS- 11A-200, YS-11A-300, YS-11A-500, and YS-11A-600 series airplanes. This AD requires repetitive removal of the spinner; repetitive detailed inspections of the propeller hub to detect fatigue cracking; and replacement of a propeller hub with a new propeller hub, if necessary. This action is necessary to detect and correct fatigue cracking of the propeller hub, which could cause the loss of the propeller. This action is intended to address the identified unsafe condition.

Repetitive inspection. Re-inspect. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 05-21543 applies to

MakesMitsubishi

ModelsYS-11A-200, YS-11A-300, YS-11A-500, YS-11A-600

certain

Whether AD 05-21543 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 05-21543 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.