What happened
The aircraft departed Runway 34L at Salt Lake City International Airport under instrument meteorological conditions with moderate snowfall. Shortly after liftoff, at an altitude of approximately 200 feet above ground level, both engines began running rough. All engine instruments indicated normal parameters. The pilot applied alternate air but observed no change and closed the heat. The airplane began losing altitude while the stall warning horn sounded. The pilot executed a gear-up landing approximately 500 feet to the right of the runway centerline and about 500 feet beyond the departure end of Runway 34L.
The investigation
Post-acc examination revealed that both engines ran satisfactorily. Fuel samples taken from both fuel tanks disclosed no evidence of contaminants or water.