Background
The aircraft had been parked for several years at an airport that was being closed. Its most recent annual inspection was conducted in November 1986. Prior to ferrying the aircraft to a new location, the pilot drained the fuel tanks, pumped fuel through the lines to the gascolator, and serviced it with 22 gallons of fresh fuel. No ferry permit was obtained for the flight.
Flight and Engine Failure
After approximately 20 minutes of flight, the aircraft encountered turbulence. The pilot reduced engine power to 1800 rpm to slow the aircraft and began a descent. When the throttle was advanced again, the engine did not respond. The pilot turned on the boost pump, switched fuel tanks, observed that fuel pressure was good, and checked the magnetos. The pilot did not indicate that the carburetor heat had been turned on.
Emergency Landing and Examination
During the subsequent emergency landing, the aircraft struck trees, resulting in damage. The pilot reported that fuel remained in the aircraft after the event. No water or contamination was found in the fuel system.
Weather Conditions
The temperature and dew point were reported as 75°F and 52°F, respectively. According to carburetor icing charts, these conditions were conducive to the formation of carburetor ice.