Rolls-Royce Discussing New Version of RB. 211-535
Derby, England—Rolls-Royce is discussing with Boeing and McDonnell Douglas a new version of its RB. 211-535 engine, designed to provide sufficient thrust to power advanced, long-range versions of the 747 and DC-10 transports. Designated the RB. 211-535F4, the engine would be rated at 40,600 lb.