Singapore legislation
Regulation 181
of Air Navigation (121 — Commercial Air Transport by Large Aeroplanes) Regulations 2018
Regulation 181
Use of controlled rest on flight deck
Subregulation 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 large aeroplane only if —
the flight is of sufficient length such that taking a controlled rest does not interfere with the flight crew member’s required operational duties; and
the controlled rest takes place during low workload phases of flight.
Subregulation 2
An AOC holder must not use controlled rest on the flight deck for the following purposes:
as a substitute for proper pre‑flight sleep; (b)as a substitute for augmented crew and associated inflight rest;
as a scheduling tool;
as a method for extending crew duty periods.
Subregulation 3
An AOC holder must monitor the use of controlled rest on the flight deck to evaluate whether existing fatigue mitigation strategies are adequate.
Subregulation 4
The pilot‑in‑command of a large aeroplane must report to the AOC holder when controlled rest on the flight deck has been availed.
Subregulation 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 to.
Subregulation 6
An AOC holder must establish procedures for controlled rest on the flight deck and include these procedures in the Operations Manual.