The cabin vertical speed displays on the Door/Oxy page only when the aircraft is in which state?

The cabin vertical speed displays on the Door/Oxy page only when the aircraft is in which state?

• A. During Climb
• B. On Ground
• C. During Descent
• D. In Flight

Answer: (D)

The cabin vertical speed display is tied to the pressurization system, showing how fast the cabin altitude is changing as the system maintains or shifts pressure. That active change only occurs when the airplane is airborne and the cabin is pressurized. On the ground there’s no pressurization changing, so the display isn’t shown. Therefore the display appears only when the aircraft is in flight (during climb, cruise, or descent).

The cabin vertical speed display is tied to the pressurization system, showing how fast the cabin altitude is changing as the system maintains or shifts pressure. That active change only occurs when the airplane is airborne and the cabin is pressurized. On the ground there’s no pressurization changing, so the display isn’t shown. Therefore the display appears only when the aircraft is in flight (during climb, cruise, or descent).