At Fedex they want to see if you are actively flying. I don't think there's a hard and fast rule, i.e. x months away from flying disqualifies you, but they want active interest in flying. If you're in a non-flying billet can you do a part time job to show your interest in flying, instruct, charter work, etc? There are plenty of people here who were in your situation and came to work as professional instructors in our training dept and then after three years or so applied and went to the line. The job here is all about flying and very little about being a good officer and/or staff person. Although those characteristics are looked at, the main thing is the flying.