Singapore legislation
Regulation 52
of Air Navigation (121 — Commercial Air Transport by Large Aeroplanes) Regulations 2018
Regulation 52
Locating aeroplane in distress
Subregulation 1
An AOC holder must establish procedures for the AOC holder to be alerted when any large aeroplane equipped in accordance with regulation 105 is in distress.
Subregulation 2
When an AOC holder or an appropriate air traffic services unit has reason to believe that any aeroplane described in paragraph (1) is in distress, the AOC holder must coordinate with the air traffic services unit.
Subregulation 3
When a large aeroplane operated by an AOC holder is in emergency phase, the AOC holder must provide position information of the aeroplane to —
all relevant air traffic services units;
all relevant Search and Rescue (SAR) coordination centres and sub‑centres; and
any other organisations that the Director‑General of Civil Aviation may require, as appropriate.
Subregulation 4
In this regulation, an aeroplane is in distress when it is in a state that can result in an accident if the aeroplane behaviour event is uncorrected.