An interesting link with discussion here:
http://forum.keypublishing.co.uk/showthread.php?t=94575
A large number of phoney RAF Combat Reports (all Battle of Britain) have been coming onto the collectors market lately. Not only are these just "fake" in their own right, but the text does not always even reflect an actual event!
I think the example in the thread you will find at the above link (Sgt Frantisek on 11 September 1940) is a made-up event. At least, I have been struggling to make any sense of it. Or can somebody else confirm that the event(s) described did/did not happen?
One for VoyTech?