28 -- T56-A-427 turbine vane sets with metal blade tracks

The Naval Air Systems Command intends to contract with Rolls-Royce Corporation under basic ordering agreement N00019-00-G-0154 for up to ten sets of T56-A-427 turbine vanes with metal blade tracks to be used in testing a configuration change. Each vane set is comprised of 24 each Rolls-Royce P/N 23076255; 12 each Rolls-Royce P/N 23076256; and 6 each Rolls-Royce P/N 23076257. Rolls-Royce Corporation, as the sole engine manufacturer of the T56-A-427 turbo propeller engine is the only source that possesses the technical data necessary to engineer and produce the configured turbine vanes with metal blade track engine parts. See Note 22. NAVAIR synopsis No. 20014-03.