The contract. FO's cannot change equipment unless upgrading. Captains cannot change equipment unless pay raise. This is the interesting part. All captains on reserve or vacation are paid 50 seat pay. (We still have 3 50 seaters in Hawaii). Union has group grievance pending. So, does management settle grievance to prevent training costs, or maintain 50 seat pay and let captains go wild bidding over to new plane? Still waiting on that and where the planes will be at.