Checkpoint approaching 20° mark aircraft
Checkpoint at 12 O'Clock, aircraft on
Figure 5-8 BDHI 02 Checkpoints
If the current heading is 160°, then when the tower is 20° to the right of the nose (180°, almost
1 o'clock to our current heading), the aircraft is on course. Ideally, the tower will be at 12 o'clock
(no wind) when the aircraft returns to a heading 180°. However, the turn back to compensated
heading should be led, just as one would lead a turn on to a radial. Figure 5-8 shows the
conditions prior to the turn back to course: "<Clear right> Right 180°." In each of these steps,
do not forget to clear the aircraft! Figure 5-8 shows the BDHI maneuver correctly completed.
Note the aircraft is back on course prior to the checkpoint.
In Figure 5-11, the checkpoint (a silo) is visible on the horizon; as in the previous example, a turn
is initiated to the left, heading 180°. However, in this example, the silo never crosses the
12 o'clock position. This is illustrated in Figure 5-12.