Airworthiness Directive · Amendment 39-10585 · CFM International CFM56-2, -2A, -2B, - 3, -3B, and -3C Series Turbofan Engines
CFM International CFM56-2, -2A, -2B, - 3, -3B, and -3C Series Turbofan Engines
CFM International (CFMI) CFM56-2, -2A, -2B, -3, - 3B, and -3C series turbofan engines installed on, but not limited to McDonnell Douglas DC-8 series, Boeing 737 series, as well as Boeing E-3, E-6, and KC-135 (military) series aircraft.
This amendment adopts a new airworthiness directive (AD), applicable to CFM International (CFMI) CFM56-2, -2A, -2B, -3, -3B, and -3C series turbofan engines, that requires a one-time eddy current inspection (ECI) for cracks or gouges in certain high pressure turbine rotor (HPTR) disks. This amendment is prompted by a report of a HPTR disk found to have a crack in a rim bolt hole during a routine shop manual ECI. The actions specified by this AD are intended to prevent the potential for an uncontained failure of the HPTR disk, which could result in an inflight engine shutdown, aborted takeoff, or damage to the aircraft.
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.
