Airworthiness Directive · Amendment 39-13194 · BAE Systems (Operations) Limited Model BAe 146 Series Airplanes
BAE Systems (Operations) Limited Model BAe 146 Series Airplanes
Model BAe 146 series airplanes on which Modifications HCM50261X; HCM01077L or HCM50273B; and HCM50040E or HCM50040N; have been installed; certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to certain BAE Systems (Operations) Limited Model BAe 146 series airplanes, that requires modification of the flight annunciator box. This action is necessary to prevent traffic collision avoidance system (TCAS) aural messages and resolution advisories of the TCAS from being inhibited following a ground proximity warning system alert or test message, which could prevent the TCAS from providing attention- getting alerts, and could result in the consequent possibility of a mid-air collision or near mid-air collision. This action is intended to address the identified unsafe condition.
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
