We are a Part 91 operator as well, with IS/BAO Stage One complete. Here is our crew duty guidance:
a) Duty time begins 1 ½ hours prior to scheduled takeoff and ends ½ hour after landing
b) The normal duty period will be 14 hours or less.
c) If the crew is scheduled for a duty day >14 hours but <18 hours, an 8.0 hour rest period will be scheduled in a hotel during the duty period.
d) The maximum duty day scheduled will be 18 hours.
e) Maximum scheduled flight time will be 10 hours per day.
f) The normal rest period is 10 hours after a 14 hour duty period.
g) A minimum rest period of 12 hours will be used if a 14 hour duty day is exceeded.
Crew availability shall be as follows:
a) Pilots not on vacation should be able to report to the hangar within two hours of notification.
b) During trips, pilots shall be available within two hours in order to respond to unexpected schedule changes.
c) Pilots are considered to be on “standby duty” between the hours of 0800 and 1700 central time; Monday through Friday, excluding company recognized holidays.