Singapore legislation
Regulation 72
of Air Navigation (135 — Commercial Air Transport by Helicopters and Small Aeroplanes) Regulations 2018
Regulation 72
Performance planning — helicopters
Subregulation 1
An AOC holder must take into account the following factors when developing procedures for a helicopter to perform its intended operations safely:
the mass limitations prescribed in regulation 79;
the helicopter configuration;
the helicopter operating technique;
the operation of helicopter systems which may have an adverse effect on performance;
the pressure altitude and temperature;
any wind;
any environmental conditions which may have an adverse effect on performance;
the accuracy of the charts and other data used.
Subregulation 2
When developing procedures for obstacle avoidance during take‑off, landing and balked landing of a helicopter, the AOC holder must take into account surrounding obstacle data.