TailplateTailplate
Run a report

Airworthiness Directive 64-27-04

one-time
AD 64-27-04 · 1964-01-01 · airframe

Airworthiness Directives; Heli-Crane Corporation Marrs Joe G. Risley Lester W. Wright Kevin 42A 42B H21A H-21B Boeing Defense & Space Group\42A Boeing Defen

Which aircraft AD 64-27-04 applies to

MakesBoeing Defense & Space GroupHeli-Crane CorporationMarrs, Joe G.Risley, Lester W.Wright, Kevin
Models42A, 42B, H21A, H-21B

VERTOL, Amendment 39-9; Federal Register December 5, 1964.

Whether AD 64-27-04 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 64-27-04 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.

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.