CBA Sec 7.G.5. Vacation Deficit and Make-Up
If a pilot's vacation credit hour bank balance falls below the credit hour value of his remaining vacation in a calendar year, the following shall apply:
The pilot may bid for a make-up vacation trip(s) during the View/Add window for the bid period in which the pilot has a vacation period that, if taken as scheduled, would result in a vacation bank deficit. The credit hour of the make-up vacation trip(s) shall not exceed the projected deficit by more than 6 hours.