Is AD 2015-12-02 a recurring Airworthiness Directive?

No — AD 2015-12-02 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2015-12-02 apply to?

AD 2015-12-02 applies to Bell — models 206L-1, 206L-3, 206L-4, 206L. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2015-12-02

one-time

Official AD 2015-12-02 · FR doc 2015-13852 · 2015-06-09 · airframe

Airworthiness Directives; Bell Helicopter Textron Canada Limited

What this AD requires

We are adopting a new airworthiness directive (AD) for certain Bell Helicopter Textron Canada Limited (Bell) Model 206L-1, 206L-3, and 206L-4 helicopters. This AD requires installing a placard and revising the limitations section of the rotorcraft flight manual (RFM). This AD was prompted by several incidents of third stage engine turbine wheel failures caused by excessive vibrations at certain engine speeds during steady-state operations. The actions of this AD are intended to prevent turbine failure, engine power loss, and subsequent loss of control of the helicopter.

Which aircraft AD 2015-12-02 applies to

MakesBell

Models206L-1, 206L-3, 206L-4, 206L

Serial-conditional — narrows to serials 51001–51612, 52001–52313.

Part-conditional — 206-706-520-101.

(1) Model 206L-1 with Engine Upgrade Kit P/N 206-706-520-101 installed; (2) Model 206L-3, S/N 51001-51612, except those with a Rolls-Royce 250-C20R engine installed under STC SR00036SE; (3) Model 206L-4, S/N 52001-52313, except those with a Rolls-Royce 250-C20R engine installed under STC SR00036SE.

Whether AD 2015-12-02 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 2015-12-02 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.