In the figure above (Figure 29), the aircraft is on the 015° radial heading 180°. To intercept
the 360° radial and maintain an inbound course of 180°, you need to determine the proper
direction and amount of turn in order to comply.
Working with the top half of the RMI only, we note that the head of the #2 needle must move
15° to the left from 195 to 180°. Therefore, all we have to do is turn 15° to the right of the
present position of the needle to 210°. Shortly, we will note that the head of the needle will start
moving toward 180°.
As the head of the #2 needle approaches the desired course, turn the aircraft back to a heading to
maintain that course.
In the previous example, we found it necessary to convert radials to inbound courses. If you are
flying from CEW to MGM, 43 nm out of CEW you must switch your TACAN ahead to MGM.
Your RMI should resemble Figure 30.
3-20 RADIAL TRACKING AND COURSE CONTROL