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

49. All helicopters on high altitude flights

Edition: 2018-05-11 · Repealed

49. All helicopters on high altitude flights

(1)Approximate altitude in the Standard Atmosphere corresponding to the value of absolute pressure used in this text shall be as follows—

Absolute pressure	Metres	Feet
700 hPa	3 000	10 000
620 hPa	4 000	13 000
376 hPa	7 600	25 000

(2)A helicopter intended to be operated at flight altitudes at which the atmospheric pressure is less than 700 hPa in personnel compartments shall be equipped with oxygen storage and dispensing apparatus capable of storing and dispensing the oxygen supplies required in these regulations.

(3)A helicopter intended to be operated at flight altitudes at which the atmospheric pressure is less than 700 hPa but which is provided with means of maintaining pressures greater than 700 hPa in personnel compartments shall be provided with oxygen storage and dispensing apparatus capable of storing and dispensing the oxygen supplies required in these Regulations.

(4)A helicopter intended to be operated at flight altitudes at which the atmospheric pressure is less than 376 hPa, or which, if operated at flight altitudes at which the atmospheric pressure is more than 376 hPa which cannot descend safely within four minutes to a flight altitude at which the atmospheric pressure is equal to 620 hPa, and for which the individual certificate of airworthiness was issued on or after the 9th November, 1998, shall be provided with automatically deployable oxygen equipment to satisfy the requirements of these Regulations and the total number of oxygen dispensing units shall exceed the number of passenger and cabin crew seats by at least 10 per cent.

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Source: Kenya Law