Singapore legislation
Regulation 105
of Air Navigation (121 — Commercial Air Transport by Large Aeroplanes) Regulations 2018
Regulation 105
Autonomous location transmitting capability
Subregulation 1
An AOC holder must, no later than 1 January 2025, equip a large aeroplane with an MCTOM exceeding 27,000 kg and for which the aeroplane’s Certificate of Airworthiness is first issued on or after 1 January 2024 with a capability of autonomously transmitting information from which the aeroplane’s location can be determined by the AOC holder at least once every minute when the aeroplane is in distress.
Subregulation 2
The capability required in paragraph (1) includes —
the automatic detection of any event that indicates the aeroplane is in a distress condition;
the automatic activation of the transmission of the position information within 5 seconds after detection of the activation event;
the provision for manual activation for the transmission;
the time stamping of the transmitted information;
the ability to continuously transmit the necessary information during the loss of aircraft electrical power for at least the expected duration of the entire flight; and
the deactivation of an activated autonomous transmission of position information only by the same mechanism that activated it.
Subregulation 3
An AOC holder must ensure that the capability installed for the purposes of paragraph (1) —
provides position information that meets the position accuracy requirements established for emergency locator transmitters; and
has a low rate of false activation that is acceptable to the Director‑General of Civil Aviation.