Canadian Aviation Regulations (SOR/96-433)

700.26 (1) An air operator shall not allow a flight crew member to begin a flight duty period if, before the beginning of the period, the member advises the air operator that they are fatigued to the extent that they are not fit for duty.

(2) A flight crew member shall advise every other flight crew member and the air operator as soon as the member becomes aware that they have become fatigued during a flight duty period to the extent that they are not fit for duty.

(3) If there is only one flight crew member on board the aircraft, and the member becomes aware during a flight duty period that they have become fatigued to the extent that they are not fit for duty, they shall advise the air operator immediately or, if the aircraft is in flight, as soon as possible after the aircraft has landed.

(4) If a person who is assigned by an air operator to act as a flight crew member, or any other person, becomes aware that the assignment would result in the maximum flight time, maximum flight duty period or maximum number of hours of work being exceeded, the member or other person shall advise the air operator as soon as possible.

(5) If a flight crew member or any other person becomes aware that the member was not granted their rest period or time free from duty, the member or other person shall advise the air operator as soon as possible.