Flight Sequence
During cruise flight, the pilot noted a reduction in engine speed and applied carburetor heat. The engine ran roughly for a few minutes before returning to its previous speed. The pilot later indicated that the trip was taking longer than expected because of headwinds. Upon arrival at the destination airport, the pilot requested a practice instrument landing system (ILS) approach.
During the approach, the engine sputtered. The pilot reported that at that time, the fuel gauges indicated empty on the left and one-quarter on the right. The engine subsequently quit, and a forced landing was made to a field. After touchdown, the airplane nosed over when the nose wheel struck a furrow.
Pilot Statements
The pilot stated that he thought there could be a fuel problem. He noted previous trouble with the right fuel gauge and the length of the trip as reasons for his suspicion.
Weather Conditions
Weather conditions were conducive to serious carburetor icing at glide power.
Post-Accident Examination
During a post-accident examination of the airplane, only residual fuel was found in the fuel system. However, the airplane had been inverted for about ten hours prior to its examination, and blue staining was observed on the wings around the fuel vents. Once the airplane was righted and fuel was added to the fuel system, the engine operated.