Airworthiness Directive · Amendment 39-10564 · Eurocopter France (Formerly Aerospatiale, Society Nationale Industrielle, Sud Aviation) Model SA- 365N, SA-365N1, SA-365N2, and SA-366G1 Helicopters
Eurocopter France (Formerly Aerospatiale, Society Nationale Industrielle, Sud Aviation) Model SA- 365N, SA-365N1, SA-365N2, and SA-366G1 Helicopters
Model SA-365N, SA-365N1, SA-365N2, and SA-366G1 helicopters, certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to Eurocopter France (Formerly Aerospatiale, Society Nationale Industrielle, Sud Aviation) Model SA-365N, SA-365N1, SA- 365N2, and SA-366G1 helicopters, that requires an inspection of the transmission deck for cracks; repair of any cracked transmission deck; and replacement of the transmission deck support beams (support beams) with redesigned support beams. This amendment is prompted by several reports of cracks in the transmission deck and support beams. The actions specified by this AD are intended to detect cracks that reduce the strength of the main gearbox strut attachment and could result in failure of the main gearbox mounting, and subsequent loss of control of the helicopter.
