Airworthiness Directive 2011-22-05

one-time
Official AD 2011-22-05 · FR doc 2011-27774 · 2011-11-10 · airframe

Airworthiness Directives; Eurocopter France Model AS350B, B1, B2, B3, BA, C, D, and D1; and AS355E, F, F1, F2, N, and NP Helicopters

What this AD requires

This amendment supersedes an existing airworthiness directive (AD) for the Eurocopter France (Eurocopter) Model AS350B, B1, B2, B3, BA, C, D, and D1 helicopters; and Model AS355E, F, F1, F2, and N helicopters with certain tail rotor pitch control rods installed. That AD requires a daily check of the tail rotor (T/R) pitch control rod (control rod) outboard spherical bearing (bearing) for play. If play exists, that AD requires measuring the bearing's radial and axial play. Since that AD was issued, an incident occurred where the pilot of a Model AS350 helicopter felt vibrations in the anti-torque pedal in flight, resulting in a precautionary landing. An investigation determined that the control rod showed extensive wear on the ball- joint. This superseding AD maintains the requirements of the existing AD, and expands the applicability to include the Model AS355NP helicopter and additional part-numbered control rods. The actions specified by this AD are intended to prevent failure of a control rod, loss of T/R control, and subsequent loss of control of the helicopter.

Which aircraft AD 2011-22-05 applies to

ModelsAS350B, AS350B1, AS350B2, AS350B3, AS350BA, AS350C, AS350D, AS350D1, AS355E, AS355F, AS355F1, AS355F2, AS355N, AS355NP, AS350, AS355
Part-conditional350A33-2100-00, 350A33-2100-01, 350A33-2100-02, 350A33-2100-03, 350A33-2100-04, 350A33-2121-00, 350A33-2121-01, 350A33-2121-02.

Applies only to helicopters with a tail rotor (T/R) pitch control rod of the listed part numbers installed.

Whether AD 2011-22-05 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 complianceThe specific action taken (inspected, replaced, modified) and to what revision.
DateWhen the work was done.
Aircraft timeTotal time in service / tach at compliance — how recurring next-due is computed.
Signature & certificateThe A&P/IA who returned it to service, with certificate number.
Is AD 2011-22-05 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.