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197 - ATPL - During level flight at a constant cabin pressure altitude (which could be decreased, even at this flight level), the cabin outflow valves are:

Question 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.

Training tests and timed exam simulations ATPL - Airline Transport Pilot license