Airworthiness Directives; British Aerospace Model BAe 146 and Model Avro 146-RJ Series Airplanes

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This amendment adopts a new airworthiness directive (AD) that is applicable to all British Aerospace Model BAe 146 and Model Avro 146-RJ series airplanes. This action requires inspection(s) to detect damaged and missing surface protective finish, corrosion, and cracking on the servo tab brackets and the trim tab drive brackets of the aileron, and corrective actions, if necessary. This amendment is prompted by a report of corrosion on an aileron tab bracket between the two tab drive flanges in the area of the two attachment bolts, which resulted in cracking of the flanges at their base. The actions specified in this AD are intended to prevent the failure of the servo tab brackets and trim tab drive brackets of the aileron due to cracking associated with corrosion, which could result in reduced controllability of the airplane.