Hi
I can only suggest you post this on the forum linked to below.
There are many experts and authors there, who will no doubt be able to answer your questions.
The exact date of when he was shot down will help also

http://forum.12oclockhigh.net/forumdisplay.php?f=8

I only knew there was a training unit near paris,didn’t know they flew operationally on the western front.
There is/was a large book out, it can go for a large price, but appears it may have been reprinted ?

http://www.whsmith.co.uk/CatalogAndSearch/ProductDetails.aspx?productID=9780952686712

cheers
Jerry