Is AD 2021-11-01 a recurring Airworthiness Directive?

No — AD 2021-11-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2021-11-01 apply to?

AD 2021-11-01 applies to Bell — models 206B, 206L, 206. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2021-11-01

one-time

Official AD 2021-11-01 · FR doc 2021-12040 · 2021-06-10 · airframe

Airworthiness Directives; Bell Textron Canada Limited Helicopters

What this AD requires

The FAA is superseding Airworthiness Directive (AD) 2013-20-13 for certain Bell Helicopter Textron Canada Limited (now Bell Textron Canada Limited) (Bell) Model 206B and 206L helicopters. AD 2013-20-13 required installing a placard beneath the engine power dual tachometer and revising the Operating Limitations section of the existing Rotorcraft Flight Manual (RFM) for your helicopter. This AD was prompted by the engine manufacturer expanding the RPM (N2) steady-state operation avoidance range limits. This AD retains certain requirements of AD 2013-20-13, and requires revising certain sections of the existing RFM for your helicopter and installing or replacing a placard. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2021-11-01 applies to

MakesBell

Models206B, 206L, 206

Serial-conditional — narrows to serials 004–4690, 45001–45153, 46601–46617.

Model 206B S/N range 004-4690 includes helicopters converted from Model 206A; helicopters with a 206B3 designation are Model 206B helicopters. Model 206L S/N ranges are 45001-45153 and 46601-46617.

Whether AD 2021-11-01 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 2021-11-01 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.