20180527015069A

The pilot and one passenger departed from krts and planned to fly to UO2. While enroute the pilot elected to divert to avoid severe weather and thunderstorms. The pilot stated he determined the original flight to be 3 hours and 3 minutes duration requiring approx. 36 gallons for the flight. The pilot departed with 55 gallons onboard which is greater than the required reserve for VFR flight. The pilot decided to divert to kbyi airport, while turning to the final destination airport, the pilot reported that the engine ?stuttered a few times?, the pilot verified fuel on board and determined that there was adequate fuel. The engine then cut out at which time he adjusted his aircraft airspeed to best glide. The pilot said he ?pushed mixture full rich, said out loud ?fuel on both? And verified that fuel was on both?. The pilot said the engine would only run intermittently, stating that since the engine was not reliable and he was losing altitude that he elected to land in a field. At that time the pilot said he ?pulled the mixture to lean?, ?closed the fuel valve and turned off the master switch?. The pilot attempted to land the aircraft in the field but did not have time and altitude to align with the furrows plowed in the field; the result was the pilot attempted to land across the furrows causing the aircraft to flip upside down. The pilot stated that he was not able to use the emergency checklist because it was not within reach and and that after the flight he remembered that he did not use carb heat.