Is AD 2011-09-04 a recurring Airworthiness Directive?

Yes — AD 2011-09-04 requires a repetitive inspection every 20000 hours. Next-due depends on the aircraft's time in service.

Airworthiness Directive 2011-09-04

Q: Which aircraft does AD 2011-09-04 apply to?

AD 2011-09-04 applies to Lockheed Martin Corporation/Lockheed Martin Aeronautics Company — models 382, 382B, 382E, 382F, 382G. Serial/part conditions may narrow it to specific aircraft.

recurring

Official AD 2011-09-04 · FR doc 2011-11900 · 2011-05-18 · airframe

Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model 382, 382B, 382E, 382F, and 382G Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for the products listed above. This AD requires repetitive inspections for any damage of the lower surface of the center wing box, and corrective actions if necessary. This AD was prompted by reports of fatigue cracks of the lower surface of the center wing box. We are issuing this AD to detect and correct such cracks, which could result in the structural failure of the wings.

Repetitive inspection. Re-inspect every 20000 hours. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 2011-09-04 applies to

MakesLockheed Martin Corporation/Lockheed Martin Aeronautics Company

Models382, 382B, 382E, 382F, 382G

Whether AD 2011-09-04 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 2011-09-04 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.