Airworthiness Directive · Amendment 39-10815 · British Aerospace Model Avro 146-RJ85A and RJ100A Series Airplanes
British Aerospace Model Avro 146-RJ85A and RJ100A Series Airplanes
Model Avro 146-RJ85A and RJ100A series airplanes, as listed in British Aerospace Service Bulletin SB.57-55, dated April 27, 1998, certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to certain British Aerospace Model Avro 146-RJ85A and RJ100A series airplanes, that requires a one-time inspection for evidence of machining (undercutting) into the web of the integral stringers of the bottom skin of the wings, and corrective actions, if necessary. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent reduced wing strength and stiffness, and the onset of premature fatigue cracking, which could result in reduced structural integrity 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
