Powered by Rolls-Royce RB211-535C/E4/E4B Turbofan Engines

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 757-200, -200PF, and -200CB series airplanes, that requires repetitive inspections of the engine thrust control cable system to detect discrepancies of the wire rope, fittings, and pulleys; and replacement, if necessary. This amendment also requires a one-time inspection to determine the part number of certain pulleys and replacement of existing pulleys with new pulleys, if necessary; and modification of the engine thrust control cable installation. This amendment is prompted by reports of failure of certain engine thrust control cables. The actions specified by this AD are intended to prevent failure of certain engine thrust control cables, which could result in a severe asymmetric thrust condition during landing, and consequent reduced controllability of the airplane.