What happened
The flight originated from Sedalia AFB in Missouri under initially favorable weather conditions, with the destination set for San Antonio-Brooks Field. As the aircraft proceeded en route, meteorological conditions deteriorated, necessitating a transition to instrument flight rules (IFR). While maintaining a cruising altitude of 6,000 feet, the airframe lost control and descended into a canyon situated north of Turkey. The impact resulted in the death of all 11 occupants on board.
Findings
The accident occurred during the en route phase of flight under instrument conditions following a weather deterioration. The specific mechanical or human factors contributing to the loss of control are not detailed in the provided source material.