Is AD 73-08-01 a recurring Airworthiness Directive?

No — AD 73-08-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 73-08-01 apply to?

AD 73-08-01 applies to Boeing Vertol — models 107-II, 107. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 73-08-01

one-time

AD 73-08-01 · 1973-01-01 · airframe

Airworthiness Directives; Columbia Helicopters, Inc. 107-II Columbia Helicopters, Inc.\107-II This information is not available. Unknown 73-08-01 AD Final R

Which aircraft AD 73-08-01 applies to

MakesBoeing Vertol

Models107-II, 107

Amendment 39-1618 as amended. Applies to Model 107-II type helicopters.

Whether AD 73-08-01 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 73-08-01 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.