What happened
Immediately after takeoff, the pilot notified the tower that a return to the airport was necessary because the right engine had lost power. Witnesses observing the aircraft noted that as soon as it became airborne, the airplane exhibited a pronounced right yaw and an out-of-trim attitude.
The investigation
An examination of the wreckage determined that the rudder trim was set to the 50% nose right position. The investigation also noted that the pilot had performed a precautionary landing at the same airport the previous night following a reported partial power loss in the left engine. At that time, maintenance personnel had identified and repaired the cause of the left engine's power loss. During those repairs, the pilot expressed concerns to mechanics regarding the reliability of both engines, noting they were both beyond their Time Between Overhaul (TBO). A subsequent teardown and examination of both engines and the turbochargers found no mechanical anomalies that would have interfered with normal engine operation.