Is AD 2010-11-51 a recurring Airworthiness Directive?

No — AD 2010-11-51 is a one-time directive. Verify it was complied with in the aircraft's records.

Airworthiness Directive 2010-11-51

Q: Which aircraft does AD 2010-11-51 apply to?

Applicability depends on the aircraft's type certificate; check it against the specific tail.

one-time

Official AD 2010-11-51 · FR doc 2010-19818 · 2010-08-18 · airframe

Airworthiness Directives; Eurocopter France (Eurocopter) Model AS350B, BA, B1, B2, C, D, and D1 Helicopters and Model AS355E, F, F1, F2, and N Helicopters

What this AD requires

This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2010-11-51, which was sent previously to all known U.S. owners and operators of the specified Eurocopter model helicopters by individual letters. This AD requires visually inspecting the tail gearbox (TGB) control lever for a crack. If a crack is found, this AD also requires replacing the cracked TGB control lever with an airworthy TGB control lever. Optional terminating actions for the inspection requirements of this AD can be done by either replacing a TGB control lever with an airworthy TGB control lever that is marked with an "X" near the part number or stripping the rework area and dye-penetrant inspecting that area for a crack, and if no crack is found, reworking and marking the TGB control lever. If a crack is found, removing and replacing the cracked TGB control lever with an airworthy TGB control lever is required. This AD is prompted by several reports of cracking in a TGB control lever. The actions specified by this AD are intended to prevent failure of the TGB control lever, loss of tail rotor control, and subsequent loss of control of the helicopter.

Which aircraft AD 2010-11-51 applies to

Applicability depends on the aircraft’s type certificate — check it against the specific tail.

Whether AD 2010-11-51 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 2010-11-51 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.