Page 134 - Overseas Territories Aviation Requirements Consolidated - Total AOC

Regulation OTAR Part 121 - CAT - Large Aeroplanes

(3) the following equipment that is readily accessible to each crew member, other than
flight crew, at their normally-seated position:
(i) a crew member on demand oxygen mask; or
(ii) a passenger oxygen mask; and
(iii) portable breathing equipment for immediate use containing the greater of 120
litres of oxygen or the quantity of oxygen required for continuous use for that
time the cabin pressure altitude would exceed 10,000 feet; and
(4) sufficient spare oxygen masks, or portable protective breathing equipment, distributed
to provide immediate availability of oxygen to each crew member, regardless of
location; and
(5) a minimum quantity of supplemental oxygen that shall provide:
(i) 45 minutes supply for each flight crew member; or
(ii) 12 minutes supply for each crew member and passenger; and
(6) the greater of the quantities of supplemental or therapeutic oxygen required:
(i) if the aircraft is capable of descending from its flight altitude to below flight
level 130 within four minutes, to provide oxygen to 10 % of the passengers for
any time the cabin pressure altitude is above 10,000 feet; or
(ii) if the aircraft cannot descend to below flight level 130, to provide oxygen to all
passengers for the time the cabin pressure altitude is above 13,000 feet; or
(iii) to provide 30 minutes supply for 10 % of the passengers; or
(iv) to provide for continuous use by 1 % of the passengers; and
(b) For the purposes of paragraphs (a), the calculation of the oxygen requirements in the event of
pressurisation failure is to take into account:
(1) the time necessary for an emergency descent and the recovery phase to level flight at
a safe altitude; and
(2) any subsequent stage of the flight prior to landing when it may be necessary for the
aeroplane to be flown above flight level 100; and
(c) an aeroplane with a pressurised cabin that is to be operated at altitudes above flight level 250
shall carry the equipment and supplies in paragraph (a) and:
(1) a quick donning crew member on-demand mask readily accessible to each flight crew
member at their normally seated position; and
(2) oxygen masks capable of providing supplemental oxygen:
(i) to all passengers and crew members other than flight crew members; and
(ii) in each washroom and each separate lavatory; and
(iii) the total number of oxygen outlets and masks in the passenger
compartments, including those in each washroom and lavatory, shall exceed
the number of passenger seats by at least 10 %; and
(3) in no case less than 10 minutes' oxygen supply for all passengers carried; and
(4) when a cabin crew member is required to be carried, therapeutic oxygen capable of
providing not less than 45 minutes supply for 10 % of the passengers carried; and
(5) the extra oxygen units shall be uniformly distributed throughout the aeroplane; and
(6) oxygen masks shall be automatically presented to the passengers and crew members
in the passenger compartment when the cabin pressure altitude exceeds 14,000 feet;
and
(7) flight crew shall be provided with a manual means of making the passenger masks
available in the event of failure of the automatic system.

OTAR.121.745 Crew protective breathing equipment
(a) An aeroplane shall be equipped with protective breathing equipment (PBE) for:
(1) each required flight crew member at their assigned duty station; accessible for
immediate use; to protect the eyes, nose and mouth and to provide oxygen for a period
of at least 15 minutes; and
(2) each required cabin crew member, adjacent to their duty station; to protect the eyes,
nose and mouth and to provide oxygen for a period of at least 15 minutes.
(b) In addition, the aeroplane in (a) shall be equipped with an additional portable PBE located near
the hand fire extinguishers required in 121.700.
(c) Notwithstanding (b), when the fire extinguisher is located inside a cargo compartment, the
additional portable PBE required shall be stowed outside, but adjacent to the entrance to that
compartment.
Note: The supply for PBE may be provided by the supplemental oxygen required by 121.735 or
121.740.

OTAR.121.750 Flight recorders – construction and installation
(i.e Any type of recorder installed in the aircraft for the purpose of complementing accident/incident
investigation).
Overseas Territories Aviation Requirements 134 of 386