During level flight at a constant cabin pressure altitude (which could be decreased, even at this flight level), the cabin outflow valves are:
Domanda 197, Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license
| Fully Closed Until The Cabin Climbs To A Selected Altitude. |
| Fully closed until the cabin descends to a selected altitude. |
| At the pre-set position for take-off. |
| Partially open. |
