Is AD 2003-24-12 a recurring Airworthiness Directive?

No — AD 2003-24-12 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2003-24-12 apply to?

AD 2003-24-12 applies to Pratt & Whitney — models JT9D-3A, JT9D-7, JT9D-7A, JT9D-7F, JT9D-7H, JT9D-7AH, JT9D-7J, JT9D. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2003-24-12

one-time

Official AD 2003-24-12 · FR doc 03-30073 · 2003-12-03 · turbine engine

Airworthiness Directives; Pratt & Whitney JT9D-3A, -7, -7A, -7F, -7H, -7AH, and -7J Turbofan Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for Pratt & Whitney (PW) JT9D-3A, -7, -7A, -7F, -7H, -7AH, and -7J turbofan engines, with gearbox pressure tube, part number (P/N) 697896, and No. 4 bearing front pressure manifold, P/N 670663, installed. This AD requires a one-time visual inspection of the gearbox pressure tube and No. 4 bearing front pressure manifold and the attaching clamp assemblies for correct positioning and for wear and damage, and replacement if necessary. This AD is prompted by a report of a failed gearbox pressure tube that resulted in an engine fire. We are issuing this AD to prevent engine fires caused by failed gearbox pressure tubes or failed No. 4 bearing front pressure manifolds.

Which aircraft AD 2003-24-12 applies to

MakesPratt & Whitney

ModelsJT9D-3A, JT9D-7, JT9D-7A, JT9D-7F, JT9D-7H, JT9D-7AH, JT9D-7J, JT9D

Part-conditional — 697896, 670663.

Applies only to engines with gearbox pressure tube P/N 697896 and No. 4 bearing front pressure manifold P/N 670663 installed. Installed on, but not limited to, Boeing 747-100, -200B, -200C, and -200F airplanes.

Whether AD 2003-24-12 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 2003-24-12 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.