Singapore legislation
Regulation 54
of Air Navigation (135 — Commercial Air Transport by Helicopters and Small Aeroplanes) Regulations 2018
Regulation 54
Manipulation of controls
Subregulation 1
An AOC holder must ensure that only the following persons are permitted to manipulate the flight controls of any relevant aircraft that is in flight for any purpose:
a flight crew member qualified in accordance with Division 10 and authorised by the AOC holder;
an authorised representative of the Authority —
who has the permission of the AOC holder and the pilot‑in‑command; and
who is performing a duty for which the representative was authorised by the Authority.
Subregulation 2
Where any passenger occupies a seat that has access to flight controls in a relevant aircraft, the pilot-in-command of the aircraft must brief the passenger to ensure no intentional or inadvertent manipulation of the flight controls or instruments occurs.