Accident Overview
An aircraft crashed into a wooded area near the airport after being seen in a nose-down attitude. Witnesses reported that the propeller was turning but no engine sound was heard. The aircraft impacted the ground in a nose-low, inverted position.
Investigation Findings
During the subsequent investigation, no preimpact mechanical problems were found. The carburetor heat control was found in the heat position both in the cockpit and at the carburetor air box. The primer was found unlocked, and the magneto switch was in the off position.
Fuel and Environmental Conditions
The amount of fuel on board at the time of the accident was not determined, although the aircraft had been serviced with 5.5 gallons of fuel prior to the flight. Weather data from Augusta, Maine, about 32 miles northwest, recorded a temperature of 72°F and a dew point of 46°F. Under these conditions, serious carburetor icing was possible.
Switches and Controls
The primer was found in the unlocked position, and the magneto switch was off. The carburetor heat was engaged. No further analysis of these settings was provided in the source.