BY ORDER OF THE SECRETARY OF THE AIR FORCE AIR FORCE ...

AFMAN 11-217V1 3 JANUARY 2005 127
7.10.3.2. Aircraft Position. The aircraft position is visualized along the reciprocal
(radial) of the bearing pointer.
7.10.3.3. Fix. The fix with the greater range is established at the outer edge of the
compass card. The fix with the lesser range is visualized at a point that is
proportional to the distance represented by the outer edge of the compass card.
7.10.4. Determine Heading. Determine a precise heading from the aircraft position to
the desired fix. Determine the heading to the fix by connecting the aircraft position to
desired fix with an imaginary line. Establish another line in the same direction, parallel
to the original line through the center of the compass card. This will establish a no-wind
heading to the desired fix.
7.10.5. Adjust Heading. Adjust aircraft heading as necessary and proceed to the fix.
7.10.5.1. Drift. Apply any known wind drift correction. The effect of wind drift and
any inaccuracy of the initial solution may be compensated for by repeating the
previous steps while en route. As the aircraft approaches the desired fix, adjust the
heading as necessary to intercept the arc or radial or to comply with route clearance
beyond the fix.
7.10.5.2. Distance. The distance to the desired fix can be estimated since the
distance between the aircraft position and the desired fix is proportionate to the
distance established from the center to outer edge of the compass card.
7.10.6. Update. Update heading continuously enroute to refine your solution and correct
for winds.
7.10.6.1. NOTE: The same problem can be easily and more accurately solved on the
CPU/26A computer. This is done on the wind face by imagining that the center
grommet is the station and applying the same basic techniques as in 7.10.3 though
7.10.5 above.