On April 6, 2016, about 1330 Universal Coordinated Time (UTC), the crew of a Robinson R22 BETA, Swiss registration HB-ZGO, made a precautionary landing at Bern Airport (LSZB), Bern, Switzerland, after they smelled smoke. They noted the alternator had failed and the electrical system was shut down. The alternator fire was extinguished on landing. The two pilots were not injured. The helicopter received minor damage. The helicopter was registered to and operated by Mountain Flyers 80 Ltd. Visual meteorological conditions prevailed at the time of the incident. The local flight originated from LSZB at an undetermined time. The accident investigation is under the jurisdiction and control of the Swiss Transportation Safety Board (STSB). This report is for informational purposes only and contains information released by or obtained from the government of the Switzerland. Further information pertaining to this accident may be obtained from: Swiss Transportation Safety Board Aeropole 1, 1530 Payerne Bern, Switzerland