Narrative:

I was returning to chillicothe, mo, airport when I experienced carburetor icing. I applied carburetor heat which cleared the rough running engine condition. About 1 mi from the airport, the engine started running rough again, with carburetor heat still on. An attempted landing was started, but the engine cleared up. Since the engine cleared and the runway (grass) had a 10 mph downwind wind, I decided to go around to land upwind. At the end of the runway, the engine died. I then landed straight ahead into a corn field. This caused only small dents in the cowling and a minimum amount of corn damaged. After removing the wings to remove the aircraft from the corn field, the engine was started without incident or problem. The fuel sump was checked and no water was found or other contaminants. I suspect vapor lock caused the power outage. Automatic gas was being used with an automatic gas stc.

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Original NASA ASRS Text

Title: AN AERONCA 7AC PVT PLT PERFORMS AN OFF ARPT EMER LNDG IN A CORNFIELD WHEN HIS ENG FAILS NEAR CHT, MO.

Narrative: I WAS RETURNING TO CHILLICOTHE, MO, ARPT WHEN I EXPERIENCED CARB ICING. I APPLIED CARB HEAT WHICH CLRED THE ROUGH RUNNING ENG CONDITION. ABOUT 1 MI FROM THE ARPT, THE ENG STARTED RUNNING ROUGH AGAIN, WITH CARB HEAT STILL ON. AN ATTEMPTED LNDG WAS STARTED, BUT THE ENG CLRED UP. SINCE THE ENG CLRED AND THE RWY (GRASS) HAD A 10 MPH DOWNWIND WIND, I DECIDED TO GO AROUND TO LAND UPWIND. AT THE END OF THE RWY, THE ENG DIED. I THEN LANDED STRAIGHT AHEAD INTO A CORN FIELD. THIS CAUSED ONLY SMALL DENTS IN THE COWLING AND A MINIMUM AMOUNT OF CORN DAMAGED. AFTER REMOVING THE WINGS TO REMOVE THE ACFT FROM THE CORN FIELD, THE ENG WAS STARTED WITHOUT INCIDENT OR PROB. THE FUEL SUMP WAS CHKED AND NO WATER WAS FOUND OR OTHER CONTAMINANTS. I SUSPECT VAPOR LOCK CAUSED THE PWR OUTAGE. AUTO GAS WAS BEING USED WITH AN AUTO GAS STC.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.