Hi Jonny
I only worded it that way as I did not know how much operational flying he had done and when (date) he qualified as a Flight Engineer,there...
Yes if he was a Flight Engineer - as David posted above - he would have reverted to his original trade but would have retained and worn his Half Wing...
The Pilot did mention 'Trimley Control' for the 250deg interception - if that is a reference to Trimley Heath Radar which was sited between Felixtowe...