Civil Aviation (Operation of Aircraft-Helicopter) Regulations, 2018

27. Oxygen supply

Edition: 2018-05-11 · Repealed

27. Oxygen supply

(1)Approximate altitudes in the Standard Atmosphere corresponding to the values of absolute pressure used in the text are as follows—

Absolute pressure	Metres	Feet
700 hPa	3 000	10 000
620 hPa	4000	13 000
376 hpa	7600	25 000

(2)A person shall not commence a flight to be operated at flight altitudes at which the atmospheric pressure in personnel compartments will be less than 700 hPa unless sufficient stored breathing oxygen is carried to supply—

(a)all crew members and 10 per cent of the passengers for any period in excess of 30 minutes that the pressure in compartments occupied by them will be between 700 hPa and 620 hPa; and

(b)the crew and passengers for any period that the atmospheric pressure in compartments occupied by them will be less than 620 hPa.

(3)A flight to be operated with a pressurized helicopter shall not be commenced unless a sufficient quantity of stored breathing oxygen is carried to supply all the crew members and passengers, as is appropriate to the circumstances of the flight being undertaken, in the event of loss of pressurization, for any period that the atmospheric pressure in any compartment occupied by them would be less than 700 hPa. and in addition, when the helicopter is operated at flight altitudes at which the atmospheric pressure is more than 376 hPa and cannot descend safely to a flight altitude at which the atmospheric pressure is equal to 620 hPa within four minutes, there shall be no less than a 10-minute supply for the occupants of the passenger compartment.

In-Flight Procedures

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Source: Kenya Law