ROLLS-ROYCE
ROLLS-ROYCE (formerly Allison Engine Company) 501-D22A, 501-D22C, and 501-D22G turboprop engines [Docket No. FAA-2005-20742; Directorate Identifier 2005-NE-03-AD] - proposes to require a one-time inspection for proper metal hardness of certain 1st stage, 2nd stage, 3rd stage, and 4th stage turbine...
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