Incident Description
During a flight, the pilot encountered a situation where the engine would not develop more than 1500 RPM. Takeoff and climb had been normal until reaching 1000 feet, at which point the engine began to lose power. Unable to maintain flight, the pilot executed a forced landing in the tundra.
Findings
Subsequent examination revealed that the Bendix fuel servo, model RSA-10ED1, was out of adjustment. Specifically, the regulator stem nut was loose and had backed off to the end of the stem. The investigation did not determine how this condition developed.
Probable Cause
The forced landing resulted from the Bendix fuel servo being out of adjustment, with the regulator stem nut loose and backed off to the end of the stem.