What happened
The incident occurred while the aircraft was conducting a training flight for the 2nd Signal School at RAF Yatesbury. During the operation, the pilot was executing maneuvers at a low altitude. At this stage, control of the machine was lost, leading to an uncontrolled descent. The aircraft ultimately impacted the ground in a field. All seven individuals on board were killed in the crash.
Findings
The accident report indicates that the loss of control occurred specifically while the pilot was performing low-level maneuvers. No further specific mechanical or environmental failures are detailed in the available source material, but the immediate cause is attributed to the pilot's inability to maintain control during these specific flight conditions.