OXYGEN REQUIREMENTS
OXYGEN REQUIREMENTS
Definitions
First Aid Oxygen: additional oxygen provided for the use of passengers, who do not satisfactorily recover the following subjection to excessive cabin altitudes, during which they had been provided with supplemental oxygen.
Note: First aid oxygen is only required for pressurised aeroplanes operating above 25.000 ft where cabin crew members are required.
Supplemental Oxygen (pressurised aeroplanes): a supply of oxygen to the required number of occupants for the required flight time at the appropriate altitude(s), following a cabin depressurisation.
Supplemental Oxygen (non-pressurised aeroplanes): a supply of oxygen to be provided in non-pressurised aeroplane to the occupants whenever flight altitudes above 10.000 ft are used.
Crew Protective Breathing Equipment (PBE): an equipment to protect the eyes, nose and mouth of each flight crew member while on flight deck duty and for each cabin crew member. The PBE shall allow the crew members to continue to perform their duties even under smoke or toxic air conditions in the cabin or on the flight deck. The portable PBE equipment must allow active fire fighting.
First Aid Oxygen
The quantity of oxygen required as first aid must be enough to provide 2% of passengers and no less than 2 passengers with undiluted oxygen at a flow rate of at least 3 litres per minute Standard Temperature Pressure Dry (STPD) for the part of the flight above 8.000 ft following a depressurisation. This quantity of oxygen must be added to the required oxygen quantity for the case of emergency descent.
The first-aid oxygen equipment shall be capable of generating a mass flow to each user of a least 4 litres per minute, STPD. Means may be provided to decrease the flow to not less than 2 litres per minute, STPD, at any altitude.
Full provisions as mentioned above are available in each The Company aircraft and full description of the system and equipment is provided in the FCOM and in the CCM.
Supplemental Oxygen – Pressurised Aeroplanes
The amount of supplemental oxygen required shall be determined on the basis of cabin pressure altitude, flight duration and the assumption that a cabin pressurisation failure will occur at the altitude or point of flight that is most critical from the standpoint of oxygen need, and that, after the failure, the aeroplane will descend in accordance with emergency procedures specified in the Airplane Flight Manual (or OM Part B) to a safe alti tude for the route to be flown that will allow continued safe flight and landing.
Following a cabin pressurisation failure, the cabin pressure altitude shall be considered the same as the aeroplane altitude, unless it is shown that no probable failure of the cabin or pressurisation system will result in a cabin pressure altitude equal to the flight altitude.
Under these circumstances, the maximum cabin pressure altitude established for the type certification of the aeroplane shall be used as a basis for determination of oxygen supply.
Oxygen Equipment and Supply
Requirements
1) Flight crew members
• Each member of the flight crew on flight deck duty shall be supplied with supplemental oxygen as specified in the table below. If all occupants of flight deck seats are supplied from the flight crew source of oxygen supply then they shall be considered as flight crew members on flight deck duty for the purpose of oxygen supply.
• Flight deck seat occupants, not supplied by the flight crew source, are considered to be passengers for the purpose of oxygen supply.
• Flight crew members, not covered by the sub-paragraph above, are for the purpose of oxygen supply, to be considered as:
- Cabin crew members if they are on call or are definitely going to have flight deck duty before completing the flight;
- Passengers if they are not on call and will not be on flight deck duty during the remainder of the flight.
• Oxygen masks shall be located so as to be within the immediate reach of flight crew members whilst at their assigned duty stations.
• Oxygen masks for use by flight crew members in pressurised aeroplanes operating above 25.000 ft shall be a quick donning type of mask.
2) Cabin crew members and passengers
• The number of seats by at least 10%. The extra units are to be evenly distributed Cabin crew members and passengers shall be supplied with supplemental oxygen in accordance with table below. Cabin crew members carried above the minimum number of cabin crew members required shall be considered as passengers for the purpose of oxygen supply.
• When operating above 25.000 ft there shall be provided sufficient spare outlets and masks and/or sufficient portable oxygen units with masks for use by all required cabin crew members. The spare outlets and/or units are to be distributed evenly throughout the cabin to ensure immediate availability of oxygen to each required cabin crew member regardless of his or her location at the time of cabin pressurisation failure.
• When operating above 25.000 ft there shall be provided an oxygen dispensing unit connected to oxygen supply terminals immediately available to each occupant, wherever seated. The total number of dispensing units and outlets shall exceed the number of seats by at least 10 %. The extra units are to be evenly distributed throughout the cabin.
• The oxygen supply requirements, as specified in table below, for aeroplanes not certificated to fly at altitudes above 25.000 ft may be reduced to the entire flight time between 10.000 ft and 13.000 ft cabin pressure altitude for all required cabin crew members and for at least 10 % of the passengers if, at all points along the route to be flown, the aeroplane is able to descend safely within 4 minutes to a cabin pressure altitude of 13.000 ft.
• When operating above 25.000 ft or, if operating below, and unable to descent safely within 4 minutes to 13.000 ft, the aeroplane shall be provided with automatically deployable oxygen equipment immediately available to each occupant. The total number of dispensing units shall exceed throughout the cabin.
Note: Only applicable, when the individual certificate of airworthiness was first issued on or after 9 November, 1998.
Note: When flying over high terrain where a descent to 13.000 ft may not be possible (e.g. MEA/MORA above 13.000 ft), oxygen shall be provided to all passengers and cabin attendants for the entire flight above 13.000 ft.
Requirements for Supplemental Oxygen for Pressurised Aeroplanes:
Note 1: The supply provided must take account of the cabin pressure altitude descent profile for the routes concerned.
Note 2: The required minimum supply is that quantity of oxygen necessary for a constant rate of descent from the aeroplanes maximum certificated operating altitude to 10.000 ft in 10 minutes and followed by 20 minutes at 10.000 ft.
Note 3: The required minimum supply is that quantity of oxygen necessary for a constant rate of descent from the aeroplane's maximum certificated operating altitude to 10.000 ft in 10 minutes and followed by 110 minutes at 10.000 ft. Oxygen provided by PBEs available may be included.
Note 4: The required minimum supply is that quantity of oxygen necessary for a constant rate of descent from the aeroplane's maximum certificated operating altitude to 15.000 ft in 10 minutes.
Note 5: For the purpose of this table "passengers" means passengers actually carried and includes infants (children under the age of 2).
Supplemental Oxygen – Non-pressurized Aeroplanes
Aeroplanes without a pressurised cabin or aeroplanes with inoperative pressurisation systems shall not operate at altitudes above 10.000 ft unless supplemental oxygen and oxygen equipment with dispensing units are provided. The amount of supplemental oxygen for sustenance required for a particular operation shall be determined on the basis of flight altitudes and flight duration, consistent with the operating procedures established for each operation in the OM Part C and with the routes to be flown, and with the emergency procedures specified in the OM Part B.
Oxygen supply requirements:
1) Flight crew members
Each member of the flight crew on flight deck duty shall be supplied with supplemental oxygen in accordance with the table below. If all occupants of flight deck seats are supplied from the flight crew source of oxygen supply then they shall be considered as flight crew members on flight deck duty for the purpose of oxygen supply. 2) Cabin crew members and passengers
Cabin crew members and passengers shall be supplied with oxygen in accordance with the table below. Cabin crew members carried above the minimum number of cabin crew members required shall be considered as passengers for the purpose of oxygen supply.
Requirements for Supplemental Oxygen for non-pressurized Aeroplane
Note: For the purpose of this table "passengers" means passengers actually carried and includes infants (children under the age of 2).
Crew Protective Breathing
Equipment (PBE)
The PBE (required for all pressurised aeroplanes and all unpressurised aeroplanes with MTOW above 5,7 tonnes or a maximum seating capacity of more than 19) shall provide oxygen for a period of at least 15 minutes for each such PBE mask.
When computing the total oxygen required for the non-portable equipment, then the supply for the supplemental oxygen system as required under Chapters 8.8.2 and 8.8.3 may be considered. The portable PBE shall have a self-contained supply for 15 minutes.
On aeroplanes requiring a flight crew of more than one but no cabin crew member, a portable PBE must be carried to protect the eyes, nose and mouth of one flight crew member and to provide breathing gas for a period of not less than 15 minutes.
On aeroplanes requiring cabin crew members, each required cabin crew member shall be provided with an installed PBE adjacent to his crew member duty station.
Detailed Description of the Different Systems and the PBE
Detailed descriptions of the oxygen system, PBE, first aid and therapeutic equipment are contained in the OM Part B / CCM.
Operational Procedure Following Cabin Depressurisation
Should cabin depressurisation occur when the aircraft is above 14.000 ft commence an emergency descent according OM Part B procedures to a target altitude of 10.000 ft or less, unless limited by terrain.
When limited by terrain, descend initially to MORA and descend to 10.000 ft as soon as terrain allows.
Should decompression occur when the aircraft is at 14.000 ft or lower, no emergency descent procedure is required.
In case of decompression or abnormal operation above 10.000 ft flight crew shall always wear and use oxygen masks.
Definitions
First Aid Oxygen: additional oxygen provided for the use of passengers, who do not satisfactorily recover the following subjection to excessive cabin altitudes, during which they had been provided with supplemental oxygen.
Note: First aid oxygen is only required for pressurised aeroplanes operating above 25.000 ft where cabin crew members are required.
Supplemental Oxygen (pressurised aeroplanes): a supply of oxygen to the required number of occupants for the required flight time at the appropriate altitude(s), following a cabin depressurisation.
Supplemental Oxygen (non-pressurised aeroplanes): a supply of oxygen to be provided in non-pressurised aeroplane to the occupants whenever flight altitudes above 10.000 ft are used.
Crew Protective Breathing Equipment (PBE): an equipment to protect the eyes, nose and mouth of each flight crew member while on flight deck duty and for each cabin crew member. The PBE shall allow the crew members to continue to perform their duties even under smoke or toxic air conditions in the cabin or on the flight deck. The portable PBE equipment must allow active fire fighting.
First Aid Oxygen
The quantity of oxygen required as first aid must be enough to provide 2% of passengers and no less than 2 passengers with undiluted oxygen at a flow rate of at least 3 litres per minute Standard Temperature Pressure Dry (STPD) for the part of the flight above 8.000 ft following a depressurisation. This quantity of oxygen must be added to the required oxygen quantity for the case of emergency descent.
The first-aid oxygen equipment shall be capable of generating a mass flow to each user of a least 4 litres per minute, STPD. Means may be provided to decrease the flow to not less than 2 litres per minute, STPD, at any altitude.
Full provisions as mentioned above are available in each The Company aircraft and full description of the system and equipment is provided in the FCOM and in the CCM.
Supplemental Oxygen – Pressurised Aeroplanes
The amount of supplemental oxygen required shall be determined on the basis of cabin pressure altitude, flight duration and the assumption that a cabin pressurisation failure will occur at the altitude or point of flight that is most critical from the standpoint of oxygen need, and that, after the failure, the aeroplane will descend in accordance with emergency procedures specified in the Airplane Flight Manual (or OM Part B) to a safe alti tude for the route to be flown that will allow continued safe flight and landing.
Following a cabin pressurisation failure, the cabin pressure altitude shall be considered the same as the aeroplane altitude, unless it is shown that no probable failure of the cabin or pressurisation system will result in a cabin pressure altitude equal to the flight altitude.
Under these circumstances, the maximum cabin pressure altitude established for the type certification of the aeroplane shall be used as a basis for determination of oxygen supply.
Oxygen Equipment and Supply
Requirements
1) Flight crew members
• Each member of the flight crew on flight deck duty shall be supplied with supplemental oxygen as specified in the table below. If all occupants of flight deck seats are supplied from the flight crew source of oxygen supply then they shall be considered as flight crew members on flight deck duty for the purpose of oxygen supply.
• Flight deck seat occupants, not supplied by the flight crew source, are considered to be passengers for the purpose of oxygen supply.
• Flight crew members, not covered by the sub-paragraph above, are for the purpose of oxygen supply, to be considered as:
- Cabin crew members if they are on call or are definitely going to have flight deck duty before completing the flight;
- Passengers if they are not on call and will not be on flight deck duty during the remainder of the flight.
• Oxygen masks shall be located so as to be within the immediate reach of flight crew members whilst at their assigned duty stations.
• Oxygen masks for use by flight crew members in pressurised aeroplanes operating above 25.000 ft shall be a quick donning type of mask.
2) Cabin crew members and passengers
• The number of seats by at least 10%. The extra units are to be evenly distributed Cabin crew members and passengers shall be supplied with supplemental oxygen in accordance with table below. Cabin crew members carried above the minimum number of cabin crew members required shall be considered as passengers for the purpose of oxygen supply.
• When operating above 25.000 ft there shall be provided sufficient spare outlets and masks and/or sufficient portable oxygen units with masks for use by all required cabin crew members. The spare outlets and/or units are to be distributed evenly throughout the cabin to ensure immediate availability of oxygen to each required cabin crew member regardless of his or her location at the time of cabin pressurisation failure.
• When operating above 25.000 ft there shall be provided an oxygen dispensing unit connected to oxygen supply terminals immediately available to each occupant, wherever seated. The total number of dispensing units and outlets shall exceed the number of seats by at least 10 %. The extra units are to be evenly distributed throughout the cabin.
• The oxygen supply requirements, as specified in table below, for aeroplanes not certificated to fly at altitudes above 25.000 ft may be reduced to the entire flight time between 10.000 ft and 13.000 ft cabin pressure altitude for all required cabin crew members and for at least 10 % of the passengers if, at all points along the route to be flown, the aeroplane is able to descend safely within 4 minutes to a cabin pressure altitude of 13.000 ft.
• When operating above 25.000 ft or, if operating below, and unable to descent safely within 4 minutes to 13.000 ft, the aeroplane shall be provided with automatically deployable oxygen equipment immediately available to each occupant. The total number of dispensing units shall exceed throughout the cabin.
Note: Only applicable, when the individual certificate of airworthiness was first issued on or after 9 November, 1998.
Note: When flying over high terrain where a descent to 13.000 ft may not be possible (e.g. MEA/MORA above 13.000 ft), oxygen shall be provided to all passengers and cabin attendants for the entire flight above 13.000 ft.
Requirements for Supplemental Oxygen for Pressurised Aeroplanes:
Note 1: The supply provided must take account of the cabin pressure altitude descent profile for the routes concerned.
Note 2: The required minimum supply is that quantity of oxygen necessary for a constant rate of descent from the aeroplanes maximum certificated operating altitude to 10.000 ft in 10 minutes and followed by 20 minutes at 10.000 ft.
Note 3: The required minimum supply is that quantity of oxygen necessary for a constant rate of descent from the aeroplane's maximum certificated operating altitude to 10.000 ft in 10 minutes and followed by 110 minutes at 10.000 ft. Oxygen provided by PBEs available may be included.
Note 4: The required minimum supply is that quantity of oxygen necessary for a constant rate of descent from the aeroplane's maximum certificated operating altitude to 15.000 ft in 10 minutes.
Note 5: For the purpose of this table "passengers" means passengers actually carried and includes infants (children under the age of 2).
Supplemental Oxygen – Non-pressurized Aeroplanes
Aeroplanes without a pressurised cabin or aeroplanes with inoperative pressurisation systems shall not operate at altitudes above 10.000 ft unless supplemental oxygen and oxygen equipment with dispensing units are provided. The amount of supplemental oxygen for sustenance required for a particular operation shall be determined on the basis of flight altitudes and flight duration, consistent with the operating procedures established for each operation in the OM Part C and with the routes to be flown, and with the emergency procedures specified in the OM Part B.
Oxygen supply requirements:
1) Flight crew members
Each member of the flight crew on flight deck duty shall be supplied with supplemental oxygen in accordance with the table below. If all occupants of flight deck seats are supplied from the flight crew source of oxygen supply then they shall be considered as flight crew members on flight deck duty for the purpose of oxygen supply. 2) Cabin crew members and passengers
Cabin crew members and passengers shall be supplied with oxygen in accordance with the table below. Cabin crew members carried above the minimum number of cabin crew members required shall be considered as passengers for the purpose of oxygen supply.
Requirements for Supplemental Oxygen for non-pressurized Aeroplane
Note: For the purpose of this table "passengers" means passengers actually carried and includes infants (children under the age of 2).
Crew Protective Breathing
Equipment (PBE)
The PBE (required for all pressurised aeroplanes and all unpressurised aeroplanes with MTOW above 5,7 tonnes or a maximum seating capacity of more than 19) shall provide oxygen for a period of at least 15 minutes for each such PBE mask.
When computing the total oxygen required for the non-portable equipment, then the supply for the supplemental oxygen system as required under Chapters 8.8.2 and 8.8.3 may be considered. The portable PBE shall have a self-contained supply for 15 minutes.
On aeroplanes requiring a flight crew of more than one but no cabin crew member, a portable PBE must be carried to protect the eyes, nose and mouth of one flight crew member and to provide breathing gas for a period of not less than 15 minutes.
On aeroplanes requiring cabin crew members, each required cabin crew member shall be provided with an installed PBE adjacent to his crew member duty station.
Detailed Description of the Different Systems and the PBE
Detailed descriptions of the oxygen system, PBE, first aid and therapeutic equipment are contained in the OM Part B / CCM.
Operational Procedure Following Cabin Depressurisation
Should cabin depressurisation occur when the aircraft is above 14.000 ft commence an emergency descent according OM Part B procedures to a target altitude of 10.000 ft or less, unless limited by terrain.
When limited by terrain, descend initially to MORA and descend to 10.000 ft as soon as terrain allows.
Should decompression occur when the aircraft is at 14.000 ft or lower, no emergency descent procedure is required.
In case of decompression or abnormal operation above 10.000 ft flight crew shall always wear and use oxygen masks.
OXYGEN REQUIREMENTS
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