Background
Prior to departure, the pilot reported difficulty in achieving normal engine power. A mechanic was consulted and advised that conditions were conducive to carburetor icing, recommending the use of carburetor heat. The pilot applied carburetor heat, noted an improvement, and decided to take off to evaluate engine operation in flight.
Flight and Power Loss
After takeoff, the pilot circled the area several times while maintaining carburetor heat application. At some point, the pilot turned the carburetor heat off. Initially, engine RPM increased for a few seconds, but then the engine sputtered and lost power, according to the pilot. The pilot promptly reapplied carburetor heat, but the engine did not respond fully.
Landing and Damage
The aircraft was damaged during a landing in a spruce-covered, swampy area. No further details about the aircraft type, registration, location, or occupant status were provided in the source.