wokka, quite right and what you did not say was that the AAC Crewman gunner job is but a fraction of the RW NCA aircrew job. As you pointed out there is no level transfer.
Then Trunk_Money omitted to say how old he is. He would not be the old AAC reaching timex with the Army refusing to sign him on. That may be the 'attitude' problem. Usually they will then be too old to transfer anyway.