Is AD 2012-21-02 a recurring Airworthiness Directive?

No — AD 2012-21-02 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2012-21-02 apply to?

AD 2012-21-02 applies to Boeing — models 767-200, 767-300, 767-300F, 767-400ER, 767. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2012-21-02

one-time

Official AD 2012-21-02 · FR doc 2012-25672 · 2012-10-23 · airframe

Airworthiness Directives; The Boeing Company Airplanes

What this AD requires

We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 767-200, -300, -300F, and -400ER series airplanes. This AD was prompted by a design review following a ground fire incident and reports of flammable fluid leaks from the wing leading edge area onto the engine exhaust area. This AD requires modification of the fluid drain path in the leading edge area of the wing. We are issuing this AD to prevent flammable fluid from leaking onto the engine exhaust nozzle, which could result in a fire.

Which aircraft AD 2012-21-02 applies to

MakesBoeing

Models767-200, 767-300, 767-300F, 767-400ER, 767

Limited to airplanes identified in Boeing Special Attention Service Bulletin 767-57-0121, Revision 1, dated July 27, 2011.

Whether AD 2012-21-02 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 2012-21-02 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.