Plain English Meaning

The aircraft is flying along the correct course toward the fix or runway, lined up properly, not still turning onto it or correcting back to it.

Full Definition

A condition in which the aircraft is tracking the published or assigned course toward a fix, navaid, or runway, with the course needle centered (or within tolerance) and the heading set to maintain that track. Used in instrument procedures to confirm the aircraft is on the inbound segment of an approach, holding pattern, or course to a fix.

Context Anchor

Seen in instrument flying when joining an approach course, a holding pattern , or a course to a fix after being cleared .