![]() Still Boeing backed its card hand both ways, not only announcing the Boeing 767 as their Twin-Engine Design to cover the Twin-Aisle market, but to also build a Single-Aisle aircraft in the Boeing 757 code-named 7N7, and both aircraft have a commonality design that was shared over the two different types of airframes, in the thinking that airlines would buy and operate both types with a single commonality rating with a small conversion to the larger Boeing 767. ![]() Originally Boeing with the code-named 7X7 looked to be going down that route of three engine design, but the Airbus A300 from Europe changed the design to the more common current layout with Twin-Aisle, Twin-Engined aircraft as engine design and power had now progressed to allow big twins to have the power and range over their three engined counterparts in that now highly competitive mid-medium to large-size, long-range market. Other manufacturers went down the Twin-Aisle three-engined designs that was signified by the McDonnell Douglas DC-10 and the Lockhead L-1011 Tristar. ![]() ![]() Aircraft Review : Boeing 767-300ER Professional by VMAX and FlightFactorĪfter the huge success of the late 1950's and throughout the 1960's for the Boeing Commercial Airplane's Company with their Boeing 707/727/737 and Widebodied Boeing 747 aircraft, it was always going to be a challenge for Boeing and keep their lead in the aviation production business to develop and create the next advanced series of passenger jets.
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