Hoping one of our Canadian friends can help identify the following accident/incident:

AUS401699 John Robert KRAEMER RAAF (mustering unknown), was involved in an accident/incident during 1941-42, whilst training in Canada (date and details unknown). Does the name ring a bell?

Unusually, KRAEMER returned to Australia sometime in 1942 and probably re-mustered as an air gunner. He embarked for the UK in December 1942/January 1943, only to be killed in action on 24-8-1943, whilst serving on No.97 Squadron (BCL4/283).

KRAEMER's files at the NAA are not digitised and I have the details of death (including Storr).

Any help on the Canadian accident/incident appreciated.