Don't screw with mother nature.
After a 21-month investigation, the NTSB issued a report on the crash in December 1992. In that report, the NTSB said it 'could not identify conclusive evidence to explain the loss of' the aircraft, but indicated that the two most likely explanations were a malfunction of the airplane’s directional control system or an encounter with an unusually severe atmospheric disturbance.
Mountain wave rotor turbulence was very likely being on the lee side of the highest peak in CO in the springtime when the jet stream drops to the south.
Flight 585, Colorado Springs