Who knows their RAF bombers? in Aviation Posted December 28, 2019 On 12/26/2019 at 9:05 AM, 56RAF_Roblex said: Just to let you know that I finally got an answer to why the Wellington in my photo showed an unrecognised code. I spoke to someone from the CCMAA (Coastal Command & Maritime Aviation Association) who told me that No. 172 flew with OQ and, despite what the Internet says, never used OG. Thankyou for your efforts on my behalf. Have a lovely New Year. Well done! Nothing better than a solved mystery!