Is AD 98-23-09 a recurring Airworthiness Directive?

Yes — AD 98-23-09 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 98-23-09 apply to?

AD 98-23-09 applies to Eurocopter — models SA316. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-23-09

recurring

Official AD 98-23-09 · FR doc 98-30045 · 1998-11-10 · airframe

Airworthiness Directives; Eurocopter France Model SA 330F, G, and J Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to Eurocopter France Model SA 330F, G, and J helicopters, that requires an initial and repetitive inspections of each tail rotor shaft flapping hinge retainer (retainer) for cracks and replacement of a retainer if a crack is discovered. This amendment is prompted by a report of high vibrations due to a cracked retainer occurring on a helicopter while it was in service. The actions specified by this AD are intended to detect cracks in the retainers that, if left undetected, could lead to high tail rotor vibrations, loss of tail rotor control, and subsequent loss of control of the helicopter.

Repetitive inspection. Re-inspect. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 98-23-09 applies to

MakesEurocopter

ModelsSA316

Tail rotor shaft flapping hinge retainer; daily dye-penetrant inspection for cracks, replace if cracked. Per Eurocopter SB 05.84 Rev 1 and DGAC France AD 96-076-075(AB)R1; same Eurocopter SB series number as AD 98-31330 (Alouette III/SA316 spar-tube AD), suggesting the same SA316/SA319 family, though not explicitly named in this excerpt.

Whether AD 98-23-09 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 98-23-09 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.