Accident Overview
A pilot reported a partial loss of power to air traffic control (ATC) and subsequently executed a long descent under visual conditions. The aircraft collided with terrain during the forced landing, resulting in fatal injuries to the pilot.
Fuel Examination
Onsite examination of the wreckage revealed that the left fuel tank contained less than 1/2 gallon of fuel. The fuel selector was positioned to the left tank and was found to be operable. A small amount of fuel leaked from the right tank following the accident.
Engine Test
The engine was successfully test run after the accident, indicating no mechanical failure unrelated to fuel supply.
Witness Accounts
Witnesses reported observing the aircraft stall as the landing gear was extended. The flaps were found extended approximately 5 degrees.
Weather Conditions
Moderate winds from the east were reported in southwestern Idaho at the time of the accident.