The ATSB's final investigation report into a Piper Chieftain accident near Condobolin, NSW on 2 December 2005, resulting in four deceased persons, confirms that the aircraft broke up during flight when its structural limits were exceeded in the vicinity of thunderstorms.
The Australian Transport Safety Bureau report states that there was no indication, either by way of emergency radio transmission from the pilot, or in a change in the altitude, track and speed of the aircraft as recorded by radar, that the flight was not proceeding normally. Some minutes after the pilot reported diverting…