Is AD 77-13-04 a recurring Airworthiness Directive?

No — AD 77-13-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 77-13-04

Q: Which aircraft does AD 77-13-04 apply to?

AD 77-13-04 applies to Grumman-American, Allied Ag Cat Productions, Inc. — models G-164A, G-164B, G-164B-15T, G-164B-20T, G-164B-34T, G-164B (with 73 inch wing gap), G-164. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 77-13-04 · 1977-01-01 · airframe

Airworthiness Directives; effective June 29, 1977. FOOTER: Allied Ag Cat Productions, Inc. G-164A G-164B G-164B-15T G-164B-20T G-164B-34T G-164B (with 73 in

Which aircraft AD 77-13-04 applies to

MakesGrumman-AmericanAllied Ag Cat Productions, Inc.

ModelsG-164A, G-164B, G-164B-15T, G-164B-20T, G-164B-34T, G-164B (with 73 inch wing gap), G-164

applicability read from the AD teaser — confirm exact model/serial from the records

Whether AD 77-13-04 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 77-13-04 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.

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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.