Pilot Report
The pilot stated that after approximately 30 minutes of flight, a slight engine shudder occurred lasting about three seconds. The engine did not lose power, and all instruments remained within normal operating ranges. About five minutes later, without any prior indication or warning, the engine stopped abruptly. The propeller windmilled.
Forced Landing
During the subsequent forced landing, the aircraft struck a power line and landed hard on the main landing gear. The pilot did not report any injuries, and no other damages were noted.
Engine Examination
Post-accident examination of the engine revealed that the carburetor was broken at its attachment point on the intake manifold located at the bottom of the engine. The carburetor was removed and disassembled. Inspection of the carburetor float bowl disclosed reddish-brown particles resting at the bottom. Additionally, flakes of these same particles were found clogging the carburetor jet pickup. A replacement carburetor was installed, and the engine was started and run up to 1500 revolutions per minute. The engine operated for about five minutes before being shut down using the mixture control.