At approximately 10:05 MST, a Piper PA-18-125 crashed adjacent to the Afton Municipal Airport, killing the pilot and his passenger. IMC prevailed and no flight plan had been filed. The flight was originating at the time of the accident. The airplane was en route from Oshkosh, Neb., to Nampa, Idaho, and landed for fuel in Afton after dark. The pilot was seen refueling the plane at a local service station at about 21:00 on Nov. 27. The next morning, the pilot and his passenger were seen using a courtesy car to jump start the engine at about 09:00. At 10:38, a witness spotted a fire in a field next to the airport that turned out to be the accident site. There was no evidence of airframe or powerplant failure or malfunction. Witnesses said thick fog enveloped the airport before and after the accident, and there was a heavy frost.