What happened
On 17 April 2004, a Sipa 903, registration G-ASXC, was performing a private flight from Oxenhope Airstrip in West Yorkshire. During the takeoff roll on the grass runway, the pilot applied full power and initially held the aircraft stationary using the brakes before releasing them to begin the acceleration.
As the aircraft gained speed, it turned sharply into the wind, which was blowing from 220º at approximately 10 knots. This maneuver caused the aircraft to pitch forward and eventually overturn. The impact caused extensive damage to the engine cowlings, propeller, fin, and canopy, and resulted in the engine being shock loaded. Despite the shattered canopy, the pilot and the single passenger escaped the wreckage without any injuries.
The investigation
Investigators examined the circumstances of the loss of control and the condition of the aircraft. The pilot noted that during the takeoff run, the tail of the aircraft was raised too rapidly. This premature rotation resulted in a lack of sufficient rudder authority to maintain the aircraft's heading against the wind conditions. The investigation also noted that the occupants were wearing shoulder straps, which contributed to their safety during the accident.