Is AD 98-10461 a recurring Airworthiness Directive?

No — AD 98-10461 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 98-10461

Q: Which aircraft does AD 98-10461 apply to?

AD 98-10461 applies to Mcdonnell Douglas Helicopter Systems — models 369, 369A, 369D, 369E, 369F, 369FF, 369H, 369HE. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 98-10461 · 1998-04-21 · airframe

Airworthiness Directives; McDonnell Douglas Helicopter Systems Model 369 (YOH-6A), 369A (OH-6A), 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, and 500N Helicopters

What this AD requires

This amendment supersedes an existing airworthiness directive (AD), applicable to McDonnell Douglas Helicopter Systems (MDHS) Model 369 (YOH-6A), 369A (OH-6A), 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, and 369HS helicopters, that currently requires replacing overrunning clutch outer races (outer races) having certain heat treatment numbers. This amendment requires replacing all outer races with airworthy outer races, regardless of the heat treatment number, and is applicable to a particular model helicopter that was not included in the existing AD (Model 500N helicopters). This amendment is prompted by several reports of failed clutch races having heat treatment numbers other than the ones addressed in the earlier AD. The actions specified by this AD are intended to prevent failure of the overrunning clutch assembly outer race, which could result in loss of engine drive to the rotor system and a subsequent forced landing.

Which aircraft AD 98-10461 applies to

MakesMcdonnell Douglas Helicopter Systems

Models369, 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, YOH-6A, OH-6A, OH-6

Whether AD 98-10461 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

Supersession

Supersedes AD 88-10-04.

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 98-10461 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.