Complex sentence: Fastnet Rock was south of a mid air collision between two Royal Air Froce Avro Shackleton MR.2 (WG531 and WL743) on the 11 January 1955 both aircraft was on a night time training flight from RAF St Eval and both No.42 Squadron.
Split into simpler sentences: Fastnet Rock was south of a mid air collision between two Royal Air Froce Avro Shackleton MR.2 (WG531 and WL743) on the 11 January 1955. Both aircraft was on a night time training flight after taking off from RAF St Eval and both No.42 Squadron.