Airworthiness Directive · Amendment 39-13643 · CFM International, S.A. CFM56-2-C, -3 Series, and -5 Series Turbofan Engines
CFM International, S.A. CFM56-2-C, -3 Series, and -5 Series Turbofan Engines
This airworthiness directive (AD) applies to CFM International, S.A. CFM56-2-C, -3 series, and -5 series turbofan engines. These engines are installed on, but not limited to, Airbus Industrie A319 and A320, Boeing 737, and McDonnell Douglas DC-8 airplanes.
This amendment adopts a new airworthiness directive (AD), that applies to CFM International, S.A., CFM56-2-C, -3 series, and -5 series turbofan engines. This amendment requires removing from service main fuel pumps with bronze gear-stage bearings and installing main fuel pumps with bi-metal, aluminum/bronze bearings. This amendment results from several reports of main fuel pump bronze bearing failures. We are issuing this AD to prevent main fuel pump bearing failures resulting in fuel nozzle clogging, low pressure turbine (LPT) case burn-through, and damage to 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.
