Uri

The twin engine airplane departed Ascona Airfield at 1628LT on a private flight to Saarbrücken, carrying two passengers and two pilots. Despite marginal weather conditions, the crew decided to file a VFR flight plan. Twelve minutes later, following a normal climb, the crew leveled off at 11,000 feet. While cruising in clouds, the crew failed to realize his altitude was insufficient when the right wing struck the west face of Mt Fleckistock (3,417 meters high) located to the west of Wassen, Uri. Out of control, the airplane descended until it crashed in a snow covered area. The wreckage was found two days later, on April 2. The aircraft was destroyed and tree dead bodies were found. The body of a pilot was never found.

While cruising over the Swiss Alps at an altitude of 14,000 feet, the crew encountered poor weather and icing conditions. He requested the permission to reduce his altitude when ATC advised the crew to divert to Zurich for a safe landing. This was the last radio transmission. Shortly later, the twin engine aircraft struck the southwestern slope of Mt Oberalpstock (3,328 m high) located at the border between the cantons of Uri and Graubünden. The wreckage was later found about 300 meters below the summit and all six occupants have been killed. It is believed that the crew was probably diverting to Zurich Airport at the time of the accident as the airplane struck the southwestern slope of the mountain. Among the victims were both German speedboat champions Sigrud Knubben aged 23 and Rolf Friedrich Goetze aged 43.