Is AD 87-25-05 a recurring Airworthiness Directive?

No — AD 87-25-05 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 87-25-05 apply to?

AD 87-25-05 applies to Boeing Helicopter Company (Boeing Vertol) — models 234. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 87-25-05

one-time

AD 87-25-05 · 1987-01-01 · airframe

Airworthiness Directives; supersedes AD 83-17-02, Amendment 39-4708. This amendment 39-5773 becomes effective December 15, 1987. FOOTER: Columbia Helicopter

Which aircraft AD 87-25-05 applies to

MakesBoeing Helicopter Company (Boeing Vertol)

Models234

Supersedes AD 83-17-02, Amendment 39-4708; this amendment (39-5773) becomes effective December 15, 1987. Applies to Model 234 series helicopters.

Whether AD 87-25-05 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 87-25-05 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.