At Jetblue pre-contract, the Airbus open-time was always flooded with 10hr/3 days. Company built as many as they could. They usually went to reserves, unless you’re a lineholder that wants to credit 77 hours with 12 days off, but easy flying. Those trips encompassed probably about 50% of the open time for the Airbus in BOS and JFK. Spirit’s route structure is different so maybe it won’t be a big issue.