On December 20, 2012, at 1523 UTC, a Bell UH-1H, Swiss registration HB-RXC, owned and operated by a private individual, was destroyed when it impacted terrain near Ruthi, Switzerland, following an engine malfunction. The pilot and two passengers on board were not injured. A third passenger received minor injuries. Visual meteorological conditions prevailed at the time of the accident. The foreign, non-scheduled cross-country flight departed Buchs, Switzerland, and was en route to St-Gallen-Altenrhein, Switzerland. The helicopter's T53-L-13B engine was examined under the oversight of the National Transportation Safety Board at Honeywell Aerospace, Incorporated, Phoenix, Arizona, on May 21-22, 2013. This investigation is under the jurisdiction of the government of Switzerland. Any further information regarding the investigation can be obtained from the Swiss Accident Investigation Board at: Swiss Accident Investigation Board Aviation Division Aeropole 1, Route de Morens, 1530 Payerne Switzerland Telephone: +41 26 662 33 33 Facsimile: +41 26 662 33 01 E-mail: info@sust.admin.ch