Airworthiness Directive · Amendment 39-9946 · Embraer - Empresa Brasileira de Aeronautica S.A. Airplanes
Embraer - Empresa Brasileira de Aeronautica S.A. Airplanes
This AD applies to Embraer - Empresa Brasileira de Aeronautica S.A. EMB-120, EMB-120ER, EMB-120RT.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment adopts a new airworthiness directive (AD), applicable to certain EMBRAER Model EMB-120 series airplanes, that requires removal of the upper channel fairings and their shims; and rework of the riveting holes, the aileron sealing canvas (aerodynamic seals), and the protective covers of the trim tab hinge fittings of the aileron and elevator. This amendment is prompted by reports of binding of the aileron due to water freezing between the upper channel fairings and the surface of the leading edge of the aileron. The actions specified by this AD are intended to prevent water from freezing these areas, which could result in binding of the aileron and subsequent reduced controllability of the airplane.
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
