ROLLS-ROYCE
Rolls-Royce (formerly Allison Engine Company) 250-B17B, -B17C, -B17D, -B17E, -C20, -C20B, -C20F, -C20J, -C20S, and -C20W turboprop and turboshaft engines [Docket No. FAA-2004-19648; Directorate Identifier 2004-NE-31-AD] - proposes, for engines that do not have turbine-energy-absorbing ring, Part...
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