| 摘要 |
A method of operating an aircraft (10), the aircraft (10) including a cabin (12) for the aircrew (14) which is pressurised in normal flight, and a deployment door (16) which is opened in high altitude flight when the cabin (12) will be depressurised, to enable a passenger (20) and/or a load (18) to be deployed from the depressurised cabin (12) of the aircraft (10) to the ground, the aircraft (10) including an installed breathing gas system (24) for providing a limited capacity supply of breathing gas to the aircrew (14) in the cabin (12) in the event of an emergency cabin de-compression, the installed breathing gas system (24) including a face mask (30) for the or each aircrew (14) member, a source (26a, 26b) of breathing gas being substantially pure oxygen, and a line (28) from the source (26a, 26b) to the or each face mask (30) for delivering the breathing gas to the aircrew (14), the method including prior to take-off on a mission according to a mission plan, determining whether the mission plan includes depressurising the cabin (12) and opening the deployment door (16) at high altitude, and where the cabin (12) is planned to be depressurised at high altitude, prior to take-off on the mission, loading onto the aircraft (10) an auxiliary breathing gas supply system (40) for supplying breathing gas to the aircrew (14) both during a preparation period prior to the planned cabin depressurisation when the cabin (12) is pressurised, to prepare the aircrew (14) for the planned cabin depressurisation, and during the planned cabin depressurisation, and connecting the auxiliary breathing gas supply system (40) to the installed breathing gas system (24) so that when required breathing gas is supplied to the or each face mask (30) along at least a part of the line (28), from the auxiliary breathing gas supply system (40).
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