Which switch must be pressed on the cyclic to move from Level 5 Upper Modes to Level 4 Attitude Hold?

• A. APMD DCPL
• B. Beep Trim
• C. SAS
• D. Autopilot

Answer: (A)

Shifting between higher-level autopilot modes and a stable attitude hold relies on a switch that toggles the control path from automatic, outer-loop management to the rate/attitude stabilization loop. The switch labeled APMD DCPL is the one that disconnects or reconfigures the upper-mode control so the system hands control to the Attitude Hold mode. Without activating this switch, the cyclic remains locked into Level 5 Upper Modes, keeping the aircraft under the higher-level automation.

Beep Trim is about audible feedback, not mode switching. SAS provides stabilization support but doesn’t by itself change the mode level to Attitude Hold. Autopilot might seem related, but the specific transition to Attitude Hold in this scenario is accomplished by pressing APMD DCPL, which reconfigures the control path as required.