Is AD 99-02-17 a recurring Airworthiness Directive?

Yes — AD 99-02-17 requires a repetitive inspection every 25 hours. Next-due depends on the aircraft's time in service.

Which aircraft does AD 99-02-17 apply to?

AD 99-02-17 applies to Bell — models 214B, 214B-1, 214. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 99-02-17

recurring

Official AD 99-02-17 · FR doc 99-1350 · 1999-01-26 · airframe

Airworthiness Directives; Bell Helicopter Textron, Inc. Model 214B and 214B-1 Helicopters

What this AD requires

This amendment adopts a new airworthiness directive (AD) that is applicable to Bell Helicopter Textron, Inc. (BHTI) Model 214B and 214B-1 helicopters. This action requires a reduction of the never- exceed velocity (Vne) limitation until an inspection of the tail rotor yoke (yoke) assembly for fatigue damage and installation of a redesigned yoke flapping stop are accomplished. Recurring periodic and special inspections to detect occurrences of yoke overload are also required. This amendment is prompted by reports of inflight failures of yokes installed on civilian and military helicopters of similar type design. The actions specified in this AD are intended to prevent fatigue failure of the yoke that could result in loss of the tail rotor and subsequent loss of control of the helicopter.

Repetitive inspection. Re-inspect every 25 hours. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 99-02-17 applies to

MakesBell

Models214B, 214B-1, 214

Part-conditional — 214-011-802-105, 214-011-802-111, 214-011-809-109.

Tail rotor yoke fatigue prevention (companion AD to 99-3590, for Model 214B/214B-1): review incident history; install a 130 KIAS Vne placard/RFM temporary revision pending permanent fix; within 180 days replace the yoke assembly (P/N 214-011-802-105 or -111) with a zero-time or X-ray-diffraction-passed unit per Bell ASB 214-96-57, plus flapping stop P/N 214-011-809-109.

Whether AD 99-02-17 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 99-02-17 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.