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Airworthiness Directive 99-11-02

recurring
Official AD 99-11-02 · FR doc 99-12297 · 1999-05-18 · reciprocating engine

Airworthiness Directives; Pratt & Whitney R-1340 Series Reciprocating Engines

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to Pratt & Whitney R-1340 series reciprocating engines, that requires initial and repetitive visual and fluorescent penetrant inspections of cylinders for head cracking. This amendment is prompted by reports of cylinder head cracking. The actions specified by this AD are intended to prevent cylinder head cracking, which can result in engine power loss, forced landing, and damage to the aircraft.

Repetitive inspection. Re-inspect every 250 hours. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 99-11-02 applies to

MakesPratt & Whitney
ModelsR-1340-61, R-1340-59, S1H1, S1H1-G, S1H2, S1H4, S1H5-G, S3H2, S3H1-G, S3H1, R-1340

Includes Wasp S1H1, S1H1-G, S1H2, S1H4, S1H5-G, S3H2, R-1340-61 under Type Certificate E-129; Wasp S3H1-G, R-1340-59 under Type Certificate E-142; and Wasp S3H1 under Type Certificate E-143. Installed on but not limited to de Havilland DHC-3, Air Tractor AT-301, and Ag Cat Corporation G-164A aircraft.

Whether AD 99-11-02 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 99-11-02 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.