Is AD 2014-23-01 a recurring Airworthiness Directive?

Yes — AD 2014-23-01 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Airworthiness Directive 2014-23-01

Q: Which aircraft does AD 2014-23-01 apply to?

AD 2014-23-01 applies to Pratt & Whitney Division — models PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, PW4090-3, PW4000. Serial/part conditions may narrow it to specific aircraft.

recurring

Official AD 2014-23-01 · FR doc 2014-27354 · 2014-11-21 · turbine engine

Airworthiness Directives; Pratt & Whitney Division Turbofan Engines

What this AD requires

We are superseding airworthiness directive (AD) 2013-15-09 for all Pratt & Whitney Division (PW) PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 turbofan engine models with certain second-stage high-pressure turbine (HPT) air seals installed. AD 2013- 15-09 required initial and repetitive inspections for cracks in second- stage HPT air seals. This new AD expands the applicability of AD 2013- 15-09 to include additional part numbers (P/Ns), requires removal of the mating hardware if the second-stage HPT air seal is found with a through-crack, and adds a mandatory terminating action. This AD was prompted by reports of cracking in the original location on two additional P/Ns and reports of through-cracks in a new location in the second-stage HPT air seal. We are issuing this AD to prevent failure of the second-stage HPT air seal, which could lead to uncontained engine failure and damage to 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 2014-23-01 applies to

MakesPratt & Whitney Division

ModelsPW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, PW4090-3, PW4000

Part-conditional — 54L041, 50L960, 50L976.

Applies only when second-stage high-pressure turbine (HPT) air seal P/N 54L041, 50L960, or 50L976 is installed.

Whether AD 2014-23-01 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 2014-23-01 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.