Is AD 2011-08-01 a recurring Airworthiness Directive?

No — AD 2011-08-01 is a one-time directive. Verify it was complied with in the aircraft's records.

Which aircraft does AD 2011-08-01 apply to?

AD 2011-08-01 applies to Bell — models 212. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 2011-08-01

one-time

Official AD 2011-08-01 · FR doc 2011-8133 · 2011-04-06 · airframe

Airworthiness Directives; Bell Helicopter Textron, Inc. Model 212 Helicopters

What this AD requires

We are superseding an existing emergency airworthiness directive (EAD) for the Bell Helicopter Textron, Inc. (Bell) Model 212 helicopters with a certain main rotor hub inboard strap fitting (fitting) installed. That EAD requires, before further flight, removing certain serial-numbered fittings and replacing them with airworthy fittings. It also requires performing a magnetic particle inspection (MPI) on fittings with certain serial numbers (S/Ns) to inspect for a crack. If a crack is found, the cracked fitting must be replaced with an airworthy fitting, and certain data must be reported to the FAA. This airworthiness directive (AD) retains the requirements of that EAD and expands the applicability to require performing an MPI for a crack on additional serial-numbered fittings. This AD is prompted by the determination that certain fittings were not manufactured in accordance with the approved manufacturing processes and controls. In total, eight fittings have been found that have cracks. We are issuing this AD to prevent failure of a fitting, loss of a main rotor blade, and subsequent loss of control of the helicopter.

Which aircraft AD 2011-08-01 applies to

MakesBell

Models212

Serial-conditional — narrows to serials A7–A10946, A-FS7–A-FS10946, A1430–A17606, DI22296–DI22681, EA333–EA381, LK4619–LK4631, MB11908–MB11916, SH52–SH52, SH54–SH54, SH55–SH55, SH57–SH65, SH67–SH67, SH69–SH69, SH70–SH70, SH71–SH71, SH73–SH73, SH103–SH103, SH112–SH112, SH113–SH113, SH137–SH137, SH139–SH139, WR275–WR319.

Part-conditional — 212-010-103-007.

Applies only to helicopters with a main rotor hub inboard strap fitting, P/N 212-010-103-007, installed, within the listed serial number ranges by prefix.

Whether AD 2011-08-01 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 2011-08-01 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.