Is AD 99-06-15 a recurring Airworthiness Directive?

No — AD 99-06-15 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 99-06-15 apply to?

AD 99-06-15 applies to Bell — models 407. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 99-06-15

one-time

Official AD 99-06-15 · FR doc 99-8407 · 1999-04-07 · airframe

Airworthiness Directives; Bell Helicopter Textron Canada Model 407 Helicopters

What this AD requires

This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 99-06-15 which was sent previously to all known U.S. owners and operators of Bell Helicopter Textron Canada (BHTC) Model 407 helicopters by individual letters. This AD requires installing a tail rotor pitch-limiting left-pedal stop, installing an airspeed limitation placard, marking a never-exceed velocity (Vne) placard on all airspeed indicators, and revising the Limitations section of the Rotorcraft Flight Manual (RFM). This amendment is prompted by three accidents involving inflight tail rotor blade strikes against the tailboom. The actions specified by this AD are intended to prevent the tail rotor blades from striking the tailboom, which could result in separation of the aft section of the tailboom with the tail rotor gearbox and vertical fin, and subsequent loss of control of the helicopter.

Which aircraft AD 99-06-15 applies to

MakesBell

Models407

Part-conditional — 407-070-201-103.

AD to prevent tail rotor blades striking the tailboom (install left-pedal-travel stop, adjust directional-control rigging, and replace the airspeed limitation placard, P/N 407-070-201-103, with a revised placard per Figure 1); actions per Bell Helicopter Textron Canada Technical Bulletin 407-98-13, dated December 12, 1998.

Whether AD 99-06-15 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 99-06-15 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.