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

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

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

AD 98-06-06 applies to Westland — models WG30. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 98-06-06

one-time

Official AD 98-06-06 · FR doc 98-6450 · 1998-03-16 · airframe

Airworthiness Directives; GKN Westland Helicopters Ltd., 30 Series Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to GKN Westland Helicopters Ltd. (Westland) 30 series helicopters. This action requires determining the total hours time-in- service (TIS) of the six tail rotor drive shafts (drive shafts), creating a component history card or an equivalent record for each shaft, and replacing those drive shafts that exceed a certain TIS with an airworthy drive shaft. This amendment is prompted by findings of drive shaft attachment flange cracks on similar British military model helicopters. This condition, if not corrected, could result in failure of the drive shaft coupling attachment flanges that could result in loss of power to the tail rotor and subsequent loss of control of the helicopter.

Which aircraft AD 98-06-06 applies to

MakesWestland

ModelsWG30

Model inferred from GKN Westland SB number prefix 'W30' (Westland 30/WG30). Requires component history cards for the 6 tail rotor drive shafts and recurring crack inspection (intervals not exceeding 3 hours TIS, max 10 repetitive inspections) per SB W30-65-48 dated Nov 29, 1995; drive shafts 1-5 exceeding 1,000 hours TIS, shaft 6 exceeding 500 hours TIS, or any Annex-A-listed shaft exceeding 500 hours TIS must be replaced with an airworthy shaft. Special flight permits will not be issued.

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