NTSB Factual Report

On September 6, 2018, about 0725 mountain daylight time, a Cessna T310R, N376JA, experienced a partial loss of engine power in both engines shortly after takeoff from Laramie Regional Airport (LAR), Laramie, Wyoming. The pilot climbed to 8,500 feet mean sea level and leveled off for cruise flight when he reported feeling a vibration and fluttering in the airplane. He advanced throttles to return to LAR but the engines did not respond. The pilot was unable to make it back to LAR; he executed a forced landing onto prairieland and the airplane sustained substantial damage. The commercial-rated pilot was not injured. The airplane was registered to DBT Transportation Services LLC and operated under the provisions of Title 14 Code of Federal Regulations Part 91 as a business flight. Visual meteorological conditions prevailed for the flight, and no flight plan was filed.