There is clear wording in the book for PT Air, FT Air , and FT Bid Drivers. The 31st day for a full time driver is his/her new seniority date. Can a FT person who has always worked inside and never wanted to drive come out and jump ahead based on their Center or Company seniority?
Here are a few thoughts. Again, ask a steward these questions and tell us what the answers are. I would like to know WHY you are having these problems. It is interesting to hear about how your local is changing it's application of seniority but you make no mention your exact situation!
Around here, any FT employee has seniority over a PT employee. So a 20 year PT employee will not have rights to work over a FT of 1 year, will not pick vacations before a FT, etc. Those are a couple reasons for 2 lists.
A FT person, around here, cannot come in and "jump ahead" of a PT temporary cover driver (TCD). The TCD positions are for PT employees! Therefore the TCD work will be given by seniority off the PT list in your building or centers. The FT person can only bid into jobs that are FT permanent positions. However, if the PT persons job is combined with another PT job, that can be made a FT job. That is generally not tied in with TCDs work though.
Also, anyones seniority date should be the FIRST day of wage progression, when they entered the job, not the last day. I do not think I have ever heard of it any other way...