Singapore legislation
Regulation 34
of Air Navigation (121 — Commercial Air Transport by Large Aeroplanes) Regulations 2018
Regulation 34
Operating into areas with known or forecasted volcanic ash contamination
Subregulation 1
An AOC holder must establish procedures in its Operations Manual for use by a pilot of a large aeroplane when the aeroplane inadvertently encounters a volcanic ash cloud.
Subregulation 2
Despite paragraph (1), an AOC holder must not operate a large aeroplane into an area with known or forecasted volcanic ash contamination unless the AOC holder —
has established appropriate procedures in its Operations Manual for flight dispatch, operational control and in‑flight management for such a flight;
has established appropriate safety risk assessment processes as part of the safety management system for such a flight; and
has conducted the safety risk assessment mentioned in sub‑paragraph (b) and ascertained that the risks to such a flight are within the acceptable level.