https://www.sust.admin.ch/inhalte/AV...hte/HB-HOT.pdf
Thread was locked so couldn't add it.
''The Swiss Transportation Safety Investigation Board (STSB) issued a preliminary report on the August 4 accident involving a historic Junkers Ju-52/3m accident.
The Ju-52 aircraft, operated by Ju-Air, crashed into the western slope of Piz Segnas, Switzerland, at an elevation of 2540 m. All 17 passengers and three crew members were killed.
The brief report stated that the aircraft flew on a northeasterly course into the basin southwest of Piz Segnas. Towards the north end of the basin, it began a left turn, which developed into a descending spiral trajectory. A short time later, the aircraft collided with the ground almost vertically and at high speed.''
https://news.aviation-safety.net/201...ountain-basin/