Canadian Aviation Regulations

700.21 (1) An air operator shall provide a flight crew member with their schedule sufficiently in advance for them to plan for adequate rest.

(2) An air operator shall, on a monthly basis, determine if a flight crew member’s maximum flight duty period with respect to a flight is exceeded more than 10% of the time in a period of 90 consecutive days.

(3) If an air operator determines that more than 10% of a flight crew member’s maximum flight duty periods are exceeded as a result of an unforeseen operational circumstance, the air operator shall change the schedule or the flight crew member pairing for the flight not later than 28 days after the day on which the determination is made.

(4) If the air operator sets schedules on a seasonal basis, the changes referred to in subsection (3) may be delayed until the beginning of the same season in the following year.