Canadian Aviation Regulations (SOR/96-433)

700.72 (1) A flight crew member shall not take a controlled rest on the flight deck of an aircraft that is operated by an air operator unless

• (a) the rest is 45 minutes or less, is taken during the cruise portion of the flight and is completed at least 30 minutes before the scheduled beginning of the descent;

• (b) no other flight crew member is taking a rest at that time; and

• (c) at least two flight crew members remain on the flight deck.

(2) Before taking a controlled rest on the flight deck, a flight crew member shall

• (a) transfer their duties to a flight crew member who is not taking a rest;

• (b) review the status of the flight, including any specific duties to be performed during the rest;

• (c) review the wake-up criteria; and

• (d) advise the flight attendants of the start and end times of the rest.

(3) A flight crew member who takes a controlled rest on the flight deck shall not assume any duties, and no other flight crew member shall transfer any duties to them, until 15 minutes after the end of the rest.

(4) When a flight crew member returns to duty, another flight crew member shall provide them with an operational briefing.