What does the course line selected with the CRS 1 for the MAP display represent?

The course line selected with the CRS 1 for the MAP display specifically indicates the course selected at the CNC (Control Navigation Computer) for VOR 1. This means that it displays the navigational path that the pilot has set for the VOR (VHF Omnidirectional Range) navigation aid, allowing for accurate tracking towards this station. VORs are instrumental in providing pilots with guidance along their flight routes, helping them navigate effectively by pointing to specific azimuths.

In the context of the C-17 pilot's operation, understanding how to interpret the course displayed on the MAP is essential for maintaining situational awareness and making precise navigation decisions. The CRS setting is critical for ensuring that pilots can reach their destinations, adhere to air traffic control guidelines, and manage the aircraft safely throughout different phases of flight.