Air One - USA

Cessna 401

After landing at the airport, the airplane was taxied to a fixed base operator to pick up a passenger. Rime ice, as thick as two inches was seen on the airplane, and the pilots of the airplane attempted to manually remove the ice. The airplane was topped off with fuel before departure. During departure from runway 31R, the airplane collided with a fence. Numerous areas of ice were found on the airplane following the accident. Both propellers had similar damage. The pilots had reported to the FAA that the left engine had sustained a loss of power. The passenger reported that he did not notice any loss of power from either engine. No preimpact part failure or malfunction of the left engine was found.