Is AD 98-14-01 a recurring Airworthiness Directive?

No — AD 98-14-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 98-14-01

Q: Which aircraft does AD 98-14-01 apply to?

AD 98-14-01 applies to Eurocopter France — models AS-350B, AS-350BA, AS-350B1, AS-350B2, AS-350D, AS-355E, AS-355F, AS-355F1. Serial/part conditions may narrow it to specific aircraft.

one-time

Official AD 98-14-01 · FR doc 98-17178 · 1998-06-29 · airframe

Airworthiness Directives; Eurocopter France Model AS-350B, BA, B1, B2, and D, and Model AS-355E, F, F1, F2, and N Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD), applicable to Model AS-350B, BA, B1, B2, and D, and Model AS-355E, F, F1, F2, and N helicopters, that requires inspections of the main gearbox suspension bi-directional cross-beam (cross-beam) for cracks, and replacement of the cross-beam if a crack is found. This amendment is prompted by several reports of cracks in the cross-beam. The actions specified by this AD are intended to provide a terminating action to prevent failure of the cross-beam that could cause the main gearbox to pivot, resulting in severe vibrations and a subsequent forced landing.

Which aircraft AD 98-14-01 applies to

MakesEurocopter France

ModelsAS-350B, AS-350BA, AS-350B1, AS-350B2, AS-350D, AS-355E, AS-355F, AS-355F1, AS-355F2, AS-355N, AS-350, AS-355

Whether AD 98-14-01 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 98-14-01 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.