Singapore legislation
Regulation 97
of Air Navigation (121 — Commercial Air Transport by Large Aeroplanes) Regulations 2018
Regulation 97
Installation of communication, navigation and surveillance equipment
An AOC holder must ensure that the installation on a large aeroplane of any equipment required for communications, navigation or surveillance purposes is such that the failure of any single unit of such equipment, or any combination of such equipment will not result in the failure of another unit required for communications, navigation or surveillance purposes.