Singapore legislation
Regulation 86
of Air Navigation (125 — Complex General Aviation) Regulations 2018
Regulation 86
Oxygen equipment and supplies for non-pressurised aircraft
Subregulation 1
Subject to paragraph (2), a CGAC holder operating an aircraft with a non‑pressurised cabin for a complex general aviation operation that involves flight at an altitude above flight level 100 must ensure that the aircraft is equipped in accordance with the following Table 1 with a supply of oxygen sufficient for the duration of time specified for the circumstances that the aircraft is to be operated in. Table 1: Oxygen supply for a non‑unpressurised aircraft CircumstancesSupply forDuration (1)When flying above flight level 100 but not exceeding flight level 120(a)All flight crew membersAny period during which the aircraft flies above flight level 100. (b)All cabin crew members and 10% of passengersFor any continuous period exceeding 30 minutes during which the aircraft flies above flight level 100 but not exceeding flight level 120, the period by which 30 minutes is exceeded. (2)When flying above flight level 120All crew members and all passengersAny period during which the aircraft flies above flight level 120.
Subregulation 2
A CGAC holder may, in lieu of complying with paragraph (1), comply with paragraph (3) if the aircraft with a non‑pressurised cabin to be operated for a complex general aviation operation has a Certificate of Airworthiness that was first issued (whether in Singapore or elsewhere) before 1 January 1989.
Subregulation 3
The supply of oxygen to be provided for the purposes of paragraph (2) is —
a supply of oxygen sufficient for continuous use by —
all cabin crew members and, if passengers are carried, by 10% of the number of passengers, for any period exceeding 30 minutes during which the aircraft flies above flight level 100 but not above flight level 130; and
all flight crew members for any period during which the aircraft flies above flight level 100; and
a supply of oxygen sufficient for continuous use by all persons on board for the whole time during which the aircraft flies above flight level 130.
Subregulation 4
A CGAC holder must ensure that the aircraft is equipped with suitable and sufficient apparatus to enable its passengers and crew members to use the oxygen provided.
Subregulation 5
The quantity of oxygen required to comply with paragraphs (1) and (3) is computed in accordance with the information and instructions specified for that aircraft in the CGAC holder’s Operations Manual.