Is AD 2005-05-13 a recurring Airworthiness Directive?

Yes — AD 2005-05-13 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 2005-05-13 apply to?

AD 2005-05-13 applies to Pratt & Whitney — models JT9D-59A, JT9D-70A, JT9D-7Q, JT9D-7Q3, JT9D. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2005-05-13

recurring

Official AD 2005-05-13 · FR doc 05-4562 · 2005-03-10 · turbine engine

Airworthiness Directives; Pratt & Whitney JT9D-59A, -70A, -7Q, and -7Q3 Turbofan Engines

What this AD requires

The FAA is superseding an existing airworthiness directive (AD) for Pratt & Whitney (PW) JT9D-59A, -70A, -7Q, and -7Q3 turbofan engines. That AD currently requires fluorescent penetrant inspection (FPI) of high pressure turbine (HPT) second stage airseals, part numbers (P/Ns) 5002537-01, 788945, 753187, and 807410, knife-edges for cracks, each time the engine's HPT second stage airseal is accessible. This AD requires replacing each existing HPT second stage airseal with an improved design HPT second stage airseal and modifying the 2nd stage HPT vane cluster assembly and 1st stage retaining blade HPT plate assembly at next piece-part exposure, but no later than five years after the effective date of this AD. These actions are considered terminating action to the repetitive inspections required by AD 2002- 10-07. This AD results from the manufacturer introducing an improved design HPT second stage airseal and modifications to increase cooling. We are issuing this AD to prevent failure of the HPT second stage airseal due to cracks in the knife-edges, which if not detected, could result in 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 2005-05-13 applies to

MakesPratt & Whitney

ModelsJT9D-59A, JT9D-70A, JT9D-7Q, JT9D-7Q3, JT9D

Part-conditional — 5002537-01, 788945, 753187, 807410.

Applies when high pressure turbine (HPT) second stage airseal P/N 5002537-01, 788945, 753187, or 807410 is installed. Installed on, but not limited to, Airbus Industrie A300 series, Boeing 747 series, and McDonnell Douglas DC-10 series airplanes.

Whether AD 2005-05-13 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 2005-05-13 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.