Is AD 03-20985 a recurring Airworthiness Directive?

Yes — AD 03-20985 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 03-20985 apply to?

AD 03-20985 applies to Mitsubishi Heavy Industries, Ltd. Mu-2B — models MU-2B. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 03-20985

recurring

AD 03-20985 · 2003-08-20 · airframe

Airworthiness Directives; Mitsubishi Heavy Industries, Ltd. MU-2B Series Airplanes

What this AD requires

This amendment adopts a new airworthiness directive (AD) that applies to certain Mitsubishi Heavy Industries, Ltd. (Mitsubishi) MU-2B series airplanes. This AD requires you to repetitively inspect the cockpit windshield and cabin window surfaces for damage (damage is defined as crazing, scratches, and cracks). If any of the windshield or window surfaces have damage that exceeds certain limits, this AD requires you to replace the windshield or window. If the damage does not exceed certain limits, this AD allows you to blend out the damage following maintenance manual procedures. This AD is the result of continuing airworthiness information (MCAI) issued by the airworthiness authority for Japan. The actions specified by this AD are intended to prevent cockpit windshield or cabin window separation during flight, which could result in engine ingestion of glass, wing skin damage, or propeller damage, and possible loss of control of the airplane.

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 03-20985 applies to

MakesMitsubishi Heavy Industries, Ltd. Mu-2B

ModelsMU-2B

certain

Whether AD 03-20985 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 03-20985 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.