Timber. Exploration. Mining. Survey. Cargo. Operations. - We are TEMSCO Helicopters in Skagway, Alaska. TEMSCO was founded in Ketchikan, Alaska in 1958. Years of experience has consistently made us one of the safest and most reliable helicopter companies in Alaska. The TEMSCO Skagway Base offers various Helicopter and Glacier Flightseeing Tours. Please let us know about the experiences you have shared with us!