rockiesqiud
Under the Air Navigation Order, Air Engineers are dispensated their licences only if they have completed a CAA recognised military training course.
What makes you think a ground engineer are more qualified when most Air Engineers are ground engineers who have received further training and they have completed the required flying course equivelent to a civilian licence?
What training have ground engineers had in airmanship and flying regulations?
Have actually any idea what qualifying for a Flight Engineers licence entails?
As for sensor operators, I don't think there are actually any licence requirements, but if anyone knows different I await your reply.