Accident Description
An airline transport pilot executed a landing up-slope on a glacier. After landing, the pilot initiated a turn to take off down-slope. During this turn, a tailwind combined with a slope angle of 10 to 20 degrees caused the aircraft to rotate beyond the intended takeoff heading and slide sideways. The right ski dug into the snow, leading to the collapse of the right main landing gear. Subsequently, the right wing contacted the frozen surface. The accident site was at an elevation of approximately 4,400 feet above mean sea level.
Sequence of Events
The pilot first landed the aircraft while proceeding up-slope on the glacier. Following the landing, the pilot began turning the aircraft to align with a down-slope direction for takeoff. While turning, the presence of a tailwind and the significant slope (estimated at 10 to 20 degrees) caused the aircraft to continue turning past the desired takeoff heading. The aircraft then slid sideways. As the slide progressed, the right ski encountered deeper snow, exerting force on the right main landing gear, which collapsed. The right wing then struck the frozen surface.
Damage
The right main landing gear collapsed, and the right wing contacted the terrain. No further damage details were specified in the source.