ROLLS-ROYCE Spey series turbofan engines
ROLLS-ROYCE Spey series turbofan engines (Docket No. 93-ANE-31; Amdt. 39- 9072 ; AD 94-23-09) - supersedes telegraphic AD T89-02-52, which superseded AD T88-22-51. The initial AD (T88-22-51) reduced cyclic life limits for seventh stage high pressure compressor (HPC) disks from 40,000 total part...
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