Sgt Peter Henry Brown Air Gunner formerly of 12 Squadron KIA Nurnberg March 1944

Does anyone have access to the 12 Squadron ORB who could give me details of this airman’s operations with that squadron in late 1943?
Sgt Brown was transferred to 166 Squadron in Nov/Dec 43 possibly because his original 12 Squadron crew went missing or got broken up for some reason. He flew ops with a number of crews on 166 before he was killed on the Nurnberg raid 30.03.44. Any help appreciated.