Is AD 98-19615 a recurring Airworthiness Directive?

No — AD 98-19615 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 98-19615

Q: Which aircraft does AD 98-19615 apply to?

AD 98-19615 applies to Mcdonnell Douglas Helicopter Systems — models 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM. Serial/part conditions may narrow it to specific aircraft.

one-time

AD 98-19615 · 1998-07-23 · airframe

Airworthiness Directives; McDonnell Douglas Helicopter Systems Model 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, 600N, and OH-6A Helicopters

What this AD requires

This amendment supersedes an existing priority letter Airworthiness Directive (AD) 98-03-15, applicable to McDonnell Douglas Helicopter Systems (MDHS) Model 369, 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, 600N, and OH-6 helicopters that currently requires an inspection for main rotor blade (blade) cracks and for missing or cracked adhesive or paint. This amendment requires the same inspections required by the existing priority letter AD but deletes the Model 369 (Army YOH-6A), specifies recording torque events (TE), and establishes a shorter retirement life for certain blades. This amendment is prompted by an accident in which a blade failed on a Model 369D helicopter due to fatigue cracks. The actions specified by this AD are intended to detect cracks that could lead to failure of the blade and subsequent loss of control of the helicopter.

Which aircraft AD 98-19615 applies to

MakesMcdonnell Douglas Helicopter Systems

Models369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, 600N, OH-6A, 369, 500, 600, OH-6

Recurring 25-hour TIS blade inspection (paragraph (a)) applies to Model 369A/369D/369E/369F/369FF/369H/369HE/369HM/369HS/500N/OH-6A; Model 600N is excluded from the recurring inspection and instead requires one-time removal of affected blades from service (paragraph (b)).

Whether AD 98-19615 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 98-19615 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.