Is AD 2012-14-09 a recurring Airworthiness Directive?

No — AD 2012-14-09 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2012-14-09

Q: Which aircraft does AD 2012-14-09 apply to?

AD 2012-14-09 applies to Pratt & Whitney Division — models PW4050, PW4052, PW4056, PW4152, PW4156, PW4650, PW4060, PW4060A. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 2012-14-09 · FR doc 2012-23791 · 2012-10-03 · turbine engine

Airworthiness Directives; Pratt & Whitney (P&W) Division Turbofan Engines

What this AD requires

We are adopting a new airworthiness directive (AD) for certain P&W PW4000 series turbofan engines. This AD was prompted by reports of 3rd and 4th stage vane fractures in the low-pressure turbine (LPT) of certain PW4000-94" and PW4000-100" turbofan engines. This AD requires dimensional inspections of LPT 3rd stage vanes and the rear turbine case, inspection of LPT 4th stage vanes at the next LPT overhaul and removal of vanes with non-conforming airfoil fillet radii and vanes with more than one strip and recoat repair. This AD also requires disassembly and reassembly of the 2nd stage high-pressure turbine (HPT) rotor and 3rd stage LPT rotor at the next HPT and LPT overhauls. We are issuing this AD to prevent 3rd and 4th stage vane fractures in the LPT, damage to the LPT rotor, uncontained engine failure, and damage to the airplane.

Which aircraft AD 2012-14-09 applies to

MakesPratt & Whitney Division

ModelsPW4050, PW4052, PW4056, PW4152, PW4156, PW4650, PW4060, PW4060A, PW4060C, PW4062, PW4062A, PW4156A, PW4158, PW4160, PW4460, PW4462, PW4164, PW4164C, PW4164C/B, PW4168, PW4168A, PW4164-1D, PW4164C-1D, PW4164C/B-1D, PW4168-1D, PW4168A-1D, PW4170, PW4000

Covers two engine groups as named in the AD: PW4000-94" engine models and PW4000-100" engine models; the -94" group includes models with any dash number suffix.

Whether AD 2012-14-09 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 2012-14-09 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.