What happened
On the evening of the accident, a private flight departed Salinas Municipal Airport in California, bound for Eppley Airfield in Omaha, Nebraska. The flight was being conducted under instrument flight rules (IFR) with the pilot and a passenger on board. After departing Salinas, the aircraft was cleared to proceed directly to the Panoche VORTAC. The aircraft reached the Panoche VORTAC at an altitude of 17,200 feet and continued on its course, reaching the Clovis VOR at 1912 local time while climbing to a cruise altitude of 27,000 feet.
During the cruise phase, air traffic control instructed the pilot to adjust the route to fly via the Coaldale VOR before proceeding to Omaha. The pilot acknowledged this instruction. However, approximately five minutes after this exchange, the aircraft began a descending right-hand turn. Radar data indicated that the aircraft descended to 2,2600 feet, during which time the ground speed increased significantly from 190 knots to 375 knots. Following this descent, a large cluster of primary radar targets was observed spreading out from the aircraft's last known position over a distance of 6.5 miles. Air traffic controllers attempted to contact the pilot five times during this period but received no response. The aircraft subsequently impacted the terrain near Shaver Lake, California. The impact resulted in two fatalities and caused substantial damage to the aircraft type/model (not specified in source, but the flight involved a private aircraft) and a post-impact fire.
Findings
Radar and voice communication analysis indicated that the aircraft was likely operating via autopilot during the initial climb and cruise, as the flight path remained highly consistent with assigned waypoints. The investigation noted that the aircraft experienced an in-flight breakup prior to impacting the ground, evidenced by the rapid increase in ground speed and the dispersal of primary radar targets.