Singapore legislation
Regulation 39
of Air Navigation (135 — Commercial Air Transport by Helicopters and Small Aeroplanes) Regulations 2018
Regulation 39
Noise abatement procedures
Subregulation 1
Unless the Director-General of Civil Aviation otherwise approves, an AOC holder must specify, in its Operations Manual, the same noise abatement procedures for every aerodrome that may be selected for an operation involving any type of small aeroplane operated by the AOC holder.
Subregulation 2
The pilot-in-command of a small aeroplane must follow the noise abatement procedures specified for that aeroplane type in the AOC holder’s Operations Manual unless doing so is not in the interests of the safety of the aeroplane and its passengers.