Pilotpip From United States of America, joined Sep 2003, 3150 posts, RR: 11
Reply 1, posted (5 years 2 months 1 week 4 days ago) and read 2320 times:
We can be on duty for 16 hours a day. What varies is the amount of rest we have to receive. We can be scheduled to fly 8 hours per day but can go over that for items like weather as you stated. The most I've blocked in one day was just over 9 hours.
LongHauler From Canada, joined Mar 2004, 5003 posts, RR: 43
Reply 2, posted (5 years 2 months 1 week 3 days 15 hours ago) and read 2250 times:
Our max duty day is 13 hours, or 14 hours if you are staying in that time zone, (or 10 hours, 12 hours, 16 hours, or 18 hours ... depending on the start time, crew compliment, route or aircraft on-board facilities).
If the occurrence you mention is the crew's first mission of the day, then one has a lot of leeway to wait out delays. However, if it is the last leg of a 12 hour day, then maybe not so much time ... even for a short leg.
Usually these duty day limitations, while checked by the crew, are monitored and enforced by Crew Scheduling in consort with Systems Operational Control. Namely for reasons we can not see in the aircraft, the flights may be canceled due to delays. So we would just get a data-link message telling us the flight is canceled long before it becomes a limitation.
Never gonna grow up, never gonna slow down .... Barefoot Blue Jean Night