Use of controlled rest on flight deck
174.—(1)  An AOC holder may allow controlled rest on the flight deck as a fatigue mitigation response to unexpected fatigue experienced by a flight crew member during a flight of a relevant aircraft only if —
(a)the flight is of sufficient length such that the taking of a controlled rest does not interfere with the flight crew member’s required operational duties; and
(b)the controlled rest takes place during a low workload phase of flight.
(2)  An AOC holder must not use controlled rest on the flight deck for the following purposes:
(a)as a substitute for proper pre‑flight sleep;
(b)as a substitute for augmented crew and associated inflight rest;
(c)as a scheduling tool;
(d)as a method for extending crew duty periods.
(3)  An AOC holder must monitor the use of controlled rest on the flight deck to evaluate whether existing fatigue mitigation strategies are adequate.
(4)  The pilot-in-command of a relevant aircraft must report to the AOC holder when controlled rest on the flight deck has been availed.
(5)  An AOC holder must, on a regular basis, submit to the Director‑General of Civil Aviation a report containing all the instances when controlled rest was availed since the last such report.
(6)  An AOC holder must establish procedures for the use of controlled rest on the flight deck of a relevant aircraft.