Airworthiness Directive · Amendment 39-13665 · Eurocopter France Model EC 155 B and B1 Helicopters
Eurocopter France Model EC 155 B and B1 Helicopters
Model EC 155 B and B1 helicopters, with main rotor blade (blade), part number (P/N) 365A11-0080-00, installed, certificated in any category.
This amendment adopts a new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model EC 155 B and B1 helicopters. This action requires inspecting each main rotor blade (blade) for a crack in the blade tip cap mounting bracket (tenon), measuring the vertical clearance between each blade assembly and a straight edge at the blade-to-tip cap junction, and replacing the blade if a crack is found or if the measured distance is not within certain specifications. This amendment is prompted by the discovery of a crack in a tenon. This condition, if not detected, could result in loss of the tip cap, which could lead to severe vibration and loss of control of the helicopter.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
