250-Seater Will Draw On Sonic Cruiser Engine Technology.

Reports that the three biggest aviation engines manufacturers, General Electric, Pratt & Whitney and Rolls-Royce, plan to use performance specifications that had been intended for Boeing's Sonic Cruiser program, in the proposed 250-seat midsize aircraft. Issues still to be addressed by Boeing; Broad parameters for the engines defined by Boeing; Reasons for dropping the Sonic Cruiser program.