ATPL: For a pressurised aircraft, the supplemental oxygen is:
Domanda 256, Operational Procedures - ATPL - Airline Transport Pilot license
| The oxygen supplied to a passenger who needs oxygen for physiological reasons. |
| The oxygen used for protection against smoke and carbon dioxide. |
| The oxygen supplied to the aeroplane occupants in case of cabin pressurisation failure. |
| A therapeutic oxygen specifically carried for certain passengers. |
