Is AD 2012-02-01 a recurring Airworthiness Directive?

Yes — AD 2012-02-01 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2012-02-01 apply to?

AD 2012-02-01 applies to Pratt & Whitney — models PW2037, PW2037(M), PW2040, PW2000. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2012-02-01

recurring

Official AD 2012-02-01 · FR doc 2012-6500 · 2012-03-20 · turbine engine

Airworthiness Directives; Pratt & Whitney (PW) Turbofan Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for Pratt & Whitney (PW) PW2037, PW2037(M), and PW2040 turbofan engines with certain fan blades with a cutback leading edge, installed. This AD was prompted by reports from PW that fan blade leading edge erosion can result in a fan thrust deterioration mode (FTDM) condition, a condition that cannot be detected by the crew, and that reduces the engine's capability of producing required thrust. This AD requires initial and repetitive maintenance to the leading edge of cutback fan blades or applying performance decrements as specified in the Airplane Flight Manual. We are issuing this AD to correct undetectable fan thrust deterioration on these PW products.

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 2012-02-01 applies to

MakesPratt & Whitney

ModelsPW2037, PW2037(M), PW2040, PW2000

Part-conditional — 1B6531, 1B6231-001, 1A9031-001, 1B6521, 1B6221-001, 1A9721-001.

Applies only to engines with six or more fan blades (P/N 1B6531, 1B6231-001, or 1A9031-001; fan blade set P/N 1B6521, 1B6221-001, and 1A9721-001) with a cutback leading edge, installed.

Whether AD 2012-02-01 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 2012-02-01 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.