Singapore legislation
Regulation 115
of Air Navigation (121 — Commercial Air Transport by Large Aeroplanes) Regulations 2018
Regulation 115
Device to warn flight crew of loss of pressurisation
An AOC holder must ensure that every large aeroplane that is a pressurised aeroplane that is to be operated at an altitude above 25,000 ft is equipped with a device to provide positive warning to the flight crew of any dangerous loss of pressurisation.