Is AD 78-11-03 a recurring Airworthiness Directive?

No — AD 78-11-03 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 78-11-03

Q: Which aircraft does AD 78-11-03 apply to?

AD 78-11-03 applies to Pratt & Whitney — models JT3D-1, JT3D-1-MC6, JT3D-1-MC7, JT3D-1A, JT3D-1A-MC6, JT3D-1A-MC7, JT3D-3, JT3D-3B. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 78-11-03 · 1978-01-01 · turbine engine

Airworthiness Directives; This amendment becomes effective August 10, 1978. FOOTER: Pratt & Whitney Division JT3D-1 JT3D-1-MC6 JT3D-1-MC7 JT3D-1A JT3D-1A-MC

Which aircraft AD 78-11-03 applies to

MakesPratt & Whitney

ModelsJT3D-1, JT3D-1-MC6, JT3D-1-MC7, JT3D-1A, JT3D-1A-MC6, JT3D-1A-MC7, JT3D-3, JT3D-3B, JT3D-3C, JT3D-5A, JT3D-7, JT3D-7A, JT3D

Extracted snippet contains only the effective-date statement (August 10, 1978) and the Pratt & Whitney Division JT3D model-family footer list; substantive compliance text is not present in the retrieved slice.

Whether AD 78-11-03 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 78-11-03 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 →

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.