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CZ 05 403 EN (BFU 1936)
On 23 August 2005, aircraft OK-HOS took off from Locarno aerodrome (LSZL) to fly to Friedrichshafen.
The planned route was Domodossola-Varzo-Brig-Martigny-Kerzers-Willisau. When the aircraft was flying in the Gondoschlucht in the direction of the Simplon Pass, it began to descend. The crew continued the flight and flew, continuously descending, over the localities of Simplon-Dorf and Egga. In the area of Bärnetscha, approximately 6 km efore the top of the pass, the aircraft made a 180-degree turn. After the turn the aircraft tipped over and hit the ground. All four occupants were killed.