Plain English Meaning
The exact direction you fly to line up with the runway on an instrument approach. It's the course printed on the approach chart that takes you straight in toward landing.
Full Definition
The published inbound track a pilot flies to align the aircraft with the runway during an instrument approach. It is the specific magnetic course shown on the approach chart that the aircraft tracks toward the runway, typically defined by a navigation aid, a final approach fix, or an RNAV path.
Context Anchor
Seen on instrument approach charts and approach diagrams, including timed-approach examples from a .