Incident Overview
Following landing at the airport, the airplane was taxied to a fixed base operator to pick up a passenger. During this time, rime ice measuring up to two inches in thickness was observed on the airplane. The pilots attempted to manually remove the ice before departure. The airplane was also topped off with fuel.
Departure and Collision
During departure from runway 31R, the airplane collided with a fence. After the accident, numerous areas of ice were found on the airplane. Both propellers exhibited similar damage.
Engine Performance Reports
The pilots reported to the FAA that the left engine had sustained a loss of power. However, the passenger reported that he did not notice any loss of power from either engine. Investigation found no preimpact part failure or malfunction of the left engine.
Probable Cause
Failure of the pilot-in-command to ensure adequate removal of airframe ice from the aircraft during preflight.