Airworthiness Directives; Rolls-Royce Limited, Aero Division- Bristol, S.N.E.C.M.A, Olympus 593 Series Turbojet Engines

This amendment adopts a new airworthiness directive (AD) that is applicable to Rolls-Royce Limited, Aero Division-Bristol, S.N.E.C.M.A. Olympus 593 series turbojet engines. This action requires identifying reduced post-rebroaching cyclic life limits for certain rebroached stage 6 high pressure compressor (HPC) disks, inspecting the rebroached disks for cracks, and, if necessary, removing from service cracked disks. This amendment is prompted by reports of the low cyclic lives at which some rebroached stage 6 HPC disks have been found cracked. The actions specified in this AD are intended to prevent rebroached stage 6 HPC disk failure, which could result in an uncontained engine failure and damage to the aircraft.