Plain English Meaning

An instrument that shows you which way the aircraft is pointing and, at the same time, whether you are left, right, or on the navigation course you have chosen to follow.

Full Definition

A cockpit instrument that combines a heading indicator with a course deviation indicator on a single display. It shows the aircraft's current magnetic heading along with its position relative to a selected navigation course, presenting both pieces of information in one integrated picture.

Context Anchor

Seen on the instrument panel during navigation, instrument flying, and maintenance checks of navigation displays.