Preflight and Departure
The pilot conducted a preflight inspection, drained fuel from the sumps, and performed an extensive run-up. He then taxied to the fuel pumps and added over 18 gallons of fuel. After refueling, he completed another run-up and departed.
Engine Power Loss
Approximately two minutes after departure, at an altitude of about 75 feet above ground level, the engine sputtered and lost power. The pilot attempted to restore power but was unsuccessful, leading to a forced landing.
Forced Landing and Damage
The pilot selected a dirt road for the landing. During the landing roll, the left wing contacted upsloping terrain. The right wing struck trees and separated from the airplane.
Post-Accident Examination
A post-accident examination of the engine found that all engine controls and the carburetor air box were secure and functional. The magnetos were timed within 1 degree of each other, and the spark plugs showed no discoloration. Compression testing revealed that all cylinders except number 5 had compression greater than 70/80; cylinder number 5 had a compression of 25/80. Mechanics staked the valve in cylinder number 5, but the compression reading did not change.
The gascolator contained 3 ounces of fuel. The carburetor contained a small amount of water; however, the fuel selector valve and the main fuel line to the carburetor contained only fuel. The tank vents were clear.