Is AD 98-8584 a recurring Airworthiness Directive?

No — AD 98-8584 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-8584 apply to?

AD 98-8584 applies to Mcdonnell Douglas Helicopter Systems — models 369F, 369FF, 369. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-8584

one-time

AD 98-8584 · 1998-04-02 · airframe

Airworthiness Directives; McDonnell Douglas Helicopter Systems Model 369F and 369FF Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to McDonnell Douglas Helicopter Systems (MDHS) Model 369F and 369FF helicopters, that requires removing the tail rotor control rod assembly (rod assembly) and replacing it with an airworthy rod assembly. This amendment is prompted by a failure of a rod assembly during a proof-load test conducted by the manufacturer. The actions specified by this AD are intended to prevent buckling of the rod assembly when subjected to ultimate jam loads, loss of tail rotor control, and subsequent loss of control of the helicopter.

Which aircraft AD 98-8584 applies to

MakesMcdonnell Douglas Helicopter Systems

Models369F, 369FF, 369

Whether AD 98-8584 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 98-8584 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.