What happened
During the takeoff phase, the aircraft experienced a partial loss of power affecting both engines. Following the loss of power, the flight crew performed a return to the airport, and the aircraft landed without further incident. The occupants were not injured.
Prior to the accident takeoff, the airplane had been on the ground for approximately two and a half hours. During this period, rain was falling. The previous flight had concluded in sub-zero temperatures, and the aircraft had landed with the wing tanks nearly full. During the early morning preflight inspection, both the captain and the copilot reported that there were no visible signs of ice on the wings.
The investigation
An examination of the engines following the event revealed that the compressor fan blades on both engines had sustained soft body impact damage.