If AP MD DCPL is pressed for less than one second, which autopilot mode does the system revert to?

• A. NAV mode
• B. ALT hold
• C. ATT mode
• D. GA mode

Answer: (C)

When the autopilot master disconnect is pressed briefly, the autopilot disengages and the system settles into attitude hold. Attitude hold keeps the aircraft’s current roll and pitch, giving you immediate, stable control without trying to follow the previous navigation or altitude commands. NAV mode would require active guidance to follow a flight plan, which isn’t sustained once the autopilot is disconnected. ALT hold focuses on maintaining a specified altitude, not the aircraft’s orientation. GA mode is a specific go-around procedure used during missed approaches, not the default reversion after a quick disconnect. So the quick disconnect naturally reverts to attitude hold because that provides a stable, controllable state right after disengagement.