What mode does an autopilot enter when it is controlling the aircraft to a specific heading?

What mode does an autopilot enter when it is controlling the aircraft to a specific heading?

• A. Altitude mode
• B. Horizontal mode
• C. HDG mode
• D. Vertical mode

Answer: (C)

When an autopilot system is controlling the aircraft to maintain a specific heading, it enters HDG mode, also known as Heading mode. In this mode, the autopilot is programmed to follow a set heading as directed by the pilot or the flight management system. The rationale behind this choice lies in the function of different autopilot modes. HDG mode specifically focuses on controlling the aircraft's lateral movement by maintaining the selected magnetic heading, allowing for navigation and course corrections without involving altitude or vertical control. In contrast, other modes such as altitude mode are concerned with maintaining a specific altitude, horizontal mode may encompass broader control beyond just heading, and vertical mode pertains to control over the aircraft’s vertical speed or altitude changes. Thus, HDG mode is the specific setting that ensures the aircraft follows the desired heading, making it the correct choice.

When an autopilot system is controlling the aircraft to maintain a specific heading, it enters HDG mode, also known as Heading mode. In this mode, the autopilot is programmed to follow a set heading as directed by the pilot or the flight management system.

The rationale behind this choice lies in the function of different autopilot modes. HDG mode specifically focuses on controlling the aircraft's lateral movement by maintaining the selected magnetic heading, allowing for navigation and course corrections without involving altitude or vertical control.

In contrast, other modes such as altitude mode are concerned with maintaining a specific altitude, horizontal mode may encompass broader control beyond just heading, and vertical mode pertains to control over the aircraft’s vertical speed or altitude changes. Thus, HDG mode is the specific setting that ensures the aircraft follows the desired heading, making it the correct choice.