Crew skd keeps bringing up '2 hrs'. The union has fought, and won, 'reasonable available'. It was kept in the MOU.
Not too many guys live within 2 hrs of of either JFK, EWR, or LGA. Pick the worst airport for each direction EWR for the east, LGA for the south, and JFK for the NW, and more and more guys can't make some made up time.
The typical practical limit is about 4 hrs. A bunch of guys live about 3 hrs and the percentage increases dramatically inside of 3 hrs. Once you get to 4+ hrs most guys fly.
On probation it's not worth your career getting dragged into the office for late trips, or missed trips, because you're pushing the limit. Can you? Knock yourself out. Remember it's probation.
Keep in mind that probation ends on the last day of probation and NOT the last day of the last trip prior to the end of probation. Guys have lost their jobs in that window.