Is AD 2020-02-11 a recurring Airworthiness Directive?

No — AD 2020-02-11 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2020-02-11 apply to?

AD 2020-02-11 applies to Bell Helicopter Textron Canada Limited — models 412, 412EP. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2020-02-11

one-time

Official AD 2020-02-11 · FR doc 2020-02587 · 2020-02-11 · airframe

Airworthiness Directives; Bell Helicopter Textron Inc. Helicopters

What this AD requires

The FAA is superseding Airworthiness Directive (AD) 2015-04-04 for Bell Helicopter Textron Inc. (Bell) Model 412 and 412EP helicopters. AD 2015-04-04 required revising the Rotorcraft Flight Manual (RFM) for your helicopter and installing a placard to limit flights to visual flight rules (VFR) and prohibit night operations because of failing inverters. This AD requires replacing the affected inverter with a new inverter. This AD was prompted by numerous failures of inverters. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2020-02-11 applies to

MakesBell Helicopter Textron Canada Limited

Models412, 412EP

Serial-conditional — narrows to serials 33001–33213, 34001–34036, 36001–36648, 36650–36657, 36660–36672, 36674–36680, 36685–36685, 36687–36687, 36689–36689, 36691–36691, 36693–36693, 36695–36695, 37002–37012.

Part-conditional — 412-375-079-101, 412-375-079-103.

Applies to listed serial-numbered helicopters with static inverter P/N 412-375-079-101 or 412-375-079-103, S/N 29145 or higher, installed. Manufacturer name was not stated in the excerpted applicability text; 'Bell Helicopter Textron Canada Limited' is inferred from the 412/412EP model designation.

Whether AD 2020-02-11 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 2020-02-11 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.