Is AD 98-06-04 a recurring Airworthiness Directive?

No — AD 98-06-04 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-06-04 apply to?

AD 98-06-04 applies to Eurocopter France — models SA-330F, SA-330G, SA-330J, AS-332C, AS-332L, AS-332L1, SA-330, AS-332. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-06-04

one-time

Official AD 98-06-04 · FR doc 98-17043 · 1998-06-26 · airframe

Airworthiness Directives; Eurocopter France Model AS332C, L, and L1 and Model SA330F, G, and J Helicopters

What this AD requires

This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 98-06-04 which was sent previously to all known U.S. owners and operators of Eurocopter France Model AS332C, L, and L1 and Model SA330F, G, and J helicopters by individual letters. This AD requires performing a procedure to determine the angular play of the tail rotor gearbox, and repeating the procedure at certain intervals. This amendment is prompted by an accident involving a Model SA330 helicopter which resulted from the loss of the tail rotor drive. An investigation determined that the loss of the tail rotor drive was caused by excessive play between the tail rotor gearbox bevel gear and the bevel wheel. This condition, if not corrected, could result in failure of the tail rotor gearbox, loss of tail rotor drive, and subsequent loss of control of the helicopter.

Which aircraft AD 98-06-04 applies to

MakesEurocopter France

ModelsSA-330F, SA-330G, SA-330J, AS-332C, AS-332L, AS-332L1, SA-330, AS-332

Whether AD 98-06-04 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 98-06-04 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.