Incident Overview
A pilot reported that the engine began running rough during flight. After attempting to address the issue by checking the carburetor heat and magnetos, and pumping the throttle, the pilot found these measures insufficient to improve engine performance. Consequently, the pilot decided to conduct an off-field precautionary landing.
Landing and Outcome
The pilot selected a hayfield as the landing site. During the landing roll, braking was applied to manage the short field and avoid obstructions. This action caused the airplane to nose over. The aircraft came to rest inverted.
Post-Accident Examination
Following the accident, Federal Aviation Administration (FAA) inspectors examined the airplane and engine after the aircraft was removed from the accident scene. The inspection revealed no evidence of a mechanical problem that could have resulted in a rough-running engine.