Boeing intended to offer GE's pusher UDF engine on the 7J7 platform (which would have had a cruise speed of Mach 0.83), and McDonnell Douglas was going to do likewise on their MD-94X airliner. The GE36 was first flight tested mounted on the #3 engine station of a Boeing 727-100 on August 20, 1986. .The next month at the Farnborough Air Show, Boeing stated that the early acoustical results were better than expected. The company declared that the test levels were already at an acceptable state for