Hello Christian,
Here are the losses over Manheim on the night you are looking for:
ImageTypeSquadronSerial No.X1DOperation
Hampden49X3063EA-?Mannheim
Wellington99T2461LN-?Mannheim
Wellington311T2577KX-QMannheim
Blenheim101P6953SR-?Mannheim
Whitley77T4138KN-HBerlin
Whitley77T4292KN-PBerlin
Whitley102P5012GE-GBerlin
Blenheim101Z5801SR-?Mannheim
Blenheim101T2039SR-?Mannheim
Blenheim114R3744RT-?Mannheim
Hampden61X3128QR-?Mannheim
Wellington149P9268OJ-AMannheim
Try this site and click on each aircraft to know more:
http://www.lostbombers.co.uk/results...&submit=Search
I also suggest the very good book by Martin Middlebrook: The Bomber Command War Diaries.
Hope this helped you a bit.
Adriano Baumgartner