Transport Command Air signallers
I was reading about the Bristol Brittania in RAF service recently, and saw that they carried as part of their operating crew an air signaller. The 'Brit' came out of RAF service in the 1970's and was wondering why they were used whilst civvy Brits did not carry one.
The use of an air signaller seems to have been the norm for a lot of Transport Command aircraft e.g. the Hastings which was withdrawn from use during the late 1960's - Why could not another member of the crew operate the radio kit as in the civvy world?