Cessna 310B N3603D Wichita Mountains Wildlife Refuge 30 November 1968

It was a snowy, foggy day when George Boyd and his wife Anna took off from Lawton, OK, for a conference in Las Vegas, NV. George, the president of Boyd Aviation in Missouri, was instrument rated, but the NTSB summary indicates no flight plan was filed. The flight was short, though, as the airplane collided with Mt. Lincoln, about 20 NM northwest of the Lawton airport. Though the fire would have been intense, the airplane was not found for three days, by an Army helicopter on a training flight. The airplane had not been reported missing at the time it was found.