The aircraft departed the Kern Valley Airport, Kernville, California, on a direct cross-country route to its home base at General William J. Fox Airfield, Lancaster, California. The flight route was over mountainous terrain that was obscured by clouds. A flight plan was not filed and the crew did not receive a weather briefing. A pilot who departed Kern Valley Airport approximately 30 minutes after the accident aircraft and flew by General Fox Airfield stated the ceiling was at 5500 to 6500 feet MSL and he elected to maintain visual contact with the ground by flying over valleys thus circumnavigating the higher terrain. When the pilots did not report for work for the afternoon shift on November 17, 1986, friends reported them overdue to the FAA Flight Service Station. Due to the low ceilings along the aircraft's assumed flight route, an aerial search could not be conducted. The ground search rescue crew located the aircraft's wreckage at approximately 1450 PDT.