Köln- to attack the Gremberg railway yards. This raid went badly wrong. The force was split into three formations, each led by an Oboe equipped master and a similarly equipped Mosquito reserve master. Improved weather meant that the crews could bomb visually and the order was given. Tragically, the order did not reach S/L R A M Palmer's aircraft and they carried on unawares, being hit by flak on their approach but dropping their bomb load nonetheless. Soon afterwards they were set about by fighters and the aircraft was downed in the target area. S/L Palmer was posthumously awarded a VC for his valour.
Reason for Loss: Thought to have crashed at Opitter, Belgium although it is likely that some baled out over Germany