Which action selects the manual cabin pressure controller?

• A. Press the PRESS CONT switchlight twice to select manual.
• B. Press the PRESS CONT switchlight once to select manual.
• C. Hold the PRESS CONT switchlight for a long duration to select manual.
• D. Toggle the PRESS CONT switchlight to the manual position.

Answer: (B)

The action tested is how you switch the cabin pressure system from automatic to manual control. The PRESS CONT switchlight is designed to be a momentary push; a single press selects manual mode. In this design, tapping the switchlight once moves the system into manual so you can take over control, and pressing again typically toggles back toward automatic. Holding the switchlight or using a double press isn’t the defined method for entering manual in this setup. Once manual is engaged, you would proceed to set or adjust the cabin pressure as needed.