Accident Overview
A rented airplane sustained a partial loss of power due to a mechanical malfunction during the initial climb from the airport at night. Witnesses reported hearing the engine surging as the aircraft passed over or near their locations.
Forced Landing and Impact
The airplane was flying over unsuitable terrain to the south and southeast of the airport when the pilot was forced to land. During the descent, the aircraft collided with several trees before impacting the terrain.
Post-Accident Examination
Examination of the carburetor revealed that one side of the floats was collapsed and the 'U' arm was distorted. This condition intermittently restricted the movement of the fuel metering needle.
Prior Reports
The pilot who rented the airplane just prior to the accident pilot reported a rough running engine on takeoff. The operator was notified of this issue. No record of any corrective maintenance action could be located where the airplane was taken out of service.