This HEAVY line/arrow indicates the Approach
Path or Procedure Track inbound to the airfield. It contains a Heading
value in the middle of the arrow. In this example, 279° Course is given
as the Procedure Track for the approach.
Notice it is the Heavy line pointing to the
airfield. The track is the 099° Radial of GVO and you must fly a course of 279°
to maintain this approach path. This line can contain turns, arcs, and descents
as you can see in the