The video I have got involves Beauforts A9-27 and A9-268, Jervis Bay, 14-4-43.
The three Beauforts come in in very close formation. When the leader pulls up, its tail gets caught by his starboard wingman wingtip. He loses his tail and crashes in the sea after an uncontrolled "chandelle". Destabilized, the wingman crashes too.

Guy