Is AD 98-13-40 a recurring Airworthiness Directive?

No — AD 98-13-40 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 98-13-40 apply to?

AD 98-13-40 applies to Eurocopter France — models SA-330F, SA-330G, SA-330J, SA-330. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-13-40

one-time

Official AD 98-13-40 · FR doc 98-17042 · 1998-06-26 · 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 verifying the torque on the nut that secures the two transformer-rectifiers' common ground; and subsequently installing a modification to separate the grounds of the two transformer-rectifiers. This amendment is prompted by a report from the airworthiness authority of France about an unsafe condition resulting from the loss of the common ground of the two transformer-rectifiers. The actions specified by this AD are intended to prevent loss of the common ground of the two transformer-rectifiers, which could result in a complete electrical failure (essential and secondary), loss of electrically-powered instrumentation, and subsequent loss of control of the helicopter.

Which aircraft AD 98-13-40 applies to

MakesEurocopter France

ModelsSA-330F, SA-330G, SA-330J, SA-330

Whether AD 98-13-40 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 98-13-40 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.