Southern Air Transport Flight 15Saturday October 4, 1986
The cargo plane lost altitude and crashed inverted. The use by the carrier of a non-approved device designed to raise the elevator during loading operations which was not properly stowed by the flight crew and which lodged in the controls, preventing the flight crew from controlling the airplane during take-off.
While en route the left wing separated from the aircraft. The plane crashed out of contol. The undiscovered, preexisting fatigue cracks, which reduced the strength of the left wing to the degree that it failed as a result of positive aerodynamic loads created by moderate turbulence.
The cargo plane crashed after a go-around was attempted in a snowstorm. Pilot in command continued VFR flight into adverse weather conditions and delayed in initiating go around. Weather conditions - down and up drafts.