Airworthiness Directive · Amendment 39-13024 · General Electric Company CF6-50 and CF6-80C2 Turbofan Engines
General Electric Company CF6-50 and CF6-80C2 Turbofan Engines
This airworthiness directive (AD) is applicable to General Electric Company (GE) CF6-50 and CF6-80C2 turbofan engines, except CF6-80C2 engines configured with the combination of low pressure turbine (LPT) case, part number (P/N) 1647M68G15; and LPT stage 2 shroud, P/N 1862M62G01 or 1862M62G03; and LPT stage 3 shroud, P/N 1862M63G01 or 1862M63G03; and LPT stage 4 shroud, P/N 1862M64G01 or 1862M64G03. These engines are installed on, but not limited to, DC-10-15, DC-10-30, MD11, 747, 767, A300 and A310 airplanes.
This amendment adopts a new airworthiness directive (AD), that is applicable to General Electric Company CF6-50 and CF6-80C2 turbofan engines. This amendment requires replacement of certain existing CF6-50 and CF6-80C2 low pressure turbine (LPT) shrouds with new design LPT shrouds. This amendment is prompted by 37 LPT uncontained events on the CF6-50, 24 uncontained events on the CF6-80C2 engine models since 1993, and the development and certification of newly designed shrouds that will improve LPT containment capability. The actions specified by this AD are intended to prevent uncontained engine failure and possible airplane damage.
