Bearing-Heading Indicator

A Bearing-Heading Indicator (BHI) is an instrument used in aviation to display the aircraft's heading and the bearing to a selected navigation station or waypoint. It is commonly found in the cockpit of aircraft and provides pilots with important information for navigation and orientation.

The BHI consists of a compass card that displays the aircraft's heading, typically in degrees, and a movable needle or pointer that indicates the bearing to the selected navigation station or waypoint. The compass card is usually fixed to the aircraft and remains stationary, while the needle or pointer can be rotated by the pilot to align with the desired bearing.

The BHI is connected to the aircraft's navigation system, such as a VOR (VHF Omnidirectional Range) or GPS (Global Positioning System), which provides the necessary information for the instrument to display the heading and bearing. By monitoring the BHI, pilots can accurately navigate to their desired destination and maintain their desired course.

In addition to displaying the heading and bearing, some BHIs may also include additional features such as a course deviation indicator (CDI) or a horizontal situation indicator (HSI), which provide further information for navigation and situational awareness.

Overall, the Bearing-Heading Indicator is a crucial instrument for pilots, helping them navigate and maintain their desired course during flight.