Simon. She may not have had the codes applied as lost so early; if you are interested in the 367th you may find these links of use ( casualty list, mission details, and movement orders for the 367th at Westover Field Aug. 15 1942).
The loss is sometimes noted as MACR 16102 but that was B-17F 42-5370 91st BG March 4 1943. As she was missing over the UK there should not be a MACR.
If you are not already you may like to register on "armyairforces.com" they are very up on the Eighth.
Nick
https://www.fold3.com/image/30087800...3-7054496e3842
http://www.8thafhs.com/get_one_acgro...?acgroup_id=24
http://www.306bg.us/archives/367rosters.pdf