Our 91 operation uses 14 hours max crew duty day, extendable to 15 hours, not more than 2 consecutive days in a trip. Minimum crew rest is 12 hours, unless the duty day is restricted to 10 hours when it is 10 hours. No maximum daily flight hours, only duty time, but no more than 40 hours in 7 consecutive days. 36 consecutive hours free of duty every 7 days. We also have up to 3 post-trip days off.
GF