The Lost Bombers website has a list of the 150 squadron/JN coded Battles lost in action.

See: http://www.lostbombers.co.uk/results.php?type=Battle&search=JN&dday=&dmonth=&dyear=&dday2=&dmonth2=&dyear2=&pagefrom=1&submit=Search

Doesn’t narrow it down much but it is a start.