Crash of a Rockwell Grand Commander 690B in Eastbourne: 9 killed

The aircraft was flying from Dublin to Paris (Le Bourget) at a height of 25,000 feet. In the area of Petersfield, Hampshire, the aircraft began a gentle turn to the left from a south easterly heading. After the radar controller queried the departure from the expected heading the commander reported that the autopilot had 'dropped out', and the south easterly heading was resumed. Approximately 7 minutes later, the radar recording shows that the aircraft again began to turn left and started to lose height. After the aircraft had reached a northerly heading it began to lose height rapidly following which secondary radar returns were lost and the primary returns became fragmented before they also disappeared. The aircraft suffered an in-flight disintegration at approximately 19,000 feet and all 9 occupants were killed. A positive cause of the accident was not determined but there was evidence that a part of the aircraft's electrical supply had been lost. This would have caused the autopilot to disengage and also have resulted in the failure of the commander's flight director indicator. It was concluded that, following the disengagement of the autopilot, the aircraft probably entered a steep spiral dive and that the disintegration of the aircraft occurred as recovery was attempted.