Kamuela

The aircraft departed at night from runway 4R on a flight to transport mail. The pilot-in-command (PIC) was in the left seat, a pilot-rated cargo loader was in the right seat, and another cargo loader was aboard the aircraft, but was not in a seat. During takeoff, the aircraft entered a turn and flew into gradually rising terrain. The initial impact point was about 15 feet higher than the runway elevation and about 0.3 miles abeam the departure end of the runway. Investigation revealed that the company allowed pilot-rated cargo loaders to fly the aircraft from the right seat during positioning and ferry flight segments (to build multiengine flight time) as part of their compensation. There was evidence that at the time of the accident, the aircraft was being piloted on this flight from the copilot's position. The right side of the instrument panel was equipped with only EGT gauges (no flight instruments on the copilot's side). There were cloud layers in the vicinity, no moon illumination, and no visible ground lighting in the direction of flight. No preimpact mechanical malfunction or failure was identified during the investigation. Except at the pilot and copilot positions, the airplane had no other seat and/or restraint system. The operator stated that the pilot was not authorized to carry company personnel or passengers without the required seating.

En route from Kamuela to Honolulu, the engine failed. The pilot reduced his altitude and ditch the aircraft off Upolu, on the north coast of Hawaii Island. While both occupants were rescued, the aircraft sank and was not recovered.