Autopilot Module Decouple switch does what?

• A. Cancels all upper modes and reverts to ATT mode
• B. Maintains current mode
• C. Engages Digital SAS
• D. Engages go-around mode

Answer: (A)

The switch is about removing the autopilot’s guided modes and returning to a basic attitude hold. When you flip it, all the active upper modes (like navigation or vertical modes) are canceled, and the autopilot reverts to ATT, meaning it just maintains the aircraft’s current attitude. This gives you immediate manual control or a stable baseline without the autopilot trying to follow a course or altitude. It does not keep the current mode, it does not engage Digital SAS, and it does not initiate a go-around.