UAL
All reserve lines are longcall can be converted to short.
12 days off.
Aggressive pick up window.
I never had a problem trading days.
Time to hold a line depends on fleet and base, in EWR 737 it took me 2 months to hold a line.
Cannot be assigned a show before 1000 on day 1, released at 1000 on last day unless assigned a trip or if last day is before FDO released at 1500.