Incident Overview
A pilot conducting a parachute jumping flight experienced a loss of engine power while on final approach for landing. The pilot subsequently performed a forced landing to a field that was deemed unsuitable, causing the airplane to come to rest in an inverted position.
Flight Details
The flight had ascended to an altitude of 12,500 feet MSL for the parachute jump. During the descent, the pilot utilized carburetor heat but did not 'clear' the engine at regular intervals—a practice recommended for power-off descents.
Power Loss Event
At approximately 500 feet AGL, the engine lost power. The pilot described the power loss as feeling similar to the mixture being pulled out to stop the engine. A review of carburetor icing charts indicated that the temperature and dew point reported by the National Weather Service at that time fell within the range conducive to carburetor icing.
Relevant Guidance
The FAA Flight Training Handbook, in the section covering 'Descents (Maximum Distance Glides),' advises that during power-off descents, the engine should be cleared periodically to prevent excessive cooling and fouling.