Airworthiness Directive · Amendment 39-10311 · Empresa Brasileira de Aeronautica, S.A. (EMBRAER), Model EMB-120 Series Airplanes
Empresa Brasileira de Aeronautica, S.A. (EMBRAER), Model EMB-120 Series Airplanes
Model EMB-120, EMB-120RT, and EMB-120ER series airplanes; up to and including serial number 120291; certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to certain EMBRAER Model EMB-120 series airplanes, that requires deactivation of certain circuit breakers, and a revision to the Airplane Flight Manual (AFM) to provide operational procedures to prevent loss of electrical power following an engine flameout. This AD also requires modifications of the electrical system, which terminate the requirement for the AFM revision and allow reactivation of the circuit breakers. This amendment is prompted by the issuance of mandatory continued airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent generator overload conditions that could result in loss of electrical power and failure of certain flight and landing control systems, and to prevent power interruption to the attitude heading reference system (AHRS) that could result in the display of erroneous heading information.
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
