To return to the desired radial, the aircraft heading must be  altered to the right. As the aircraft returns to the desired track,  the deviation needle slowly returns to center. When centered,  the aircraft is on the desired radial and a left turn must be  made toward, but not to the original heading of 350° because  a wind drift correction must be established. The amount of  correction depends upon the strength of the wind. If the wind  velocity is unknown, a trial-and-error method can be used  to find the correct heading. Assume, for this example, a 10°  correction for a heading of 360° is maintained.  While maintaining a heading of 360°, assume that the course  deviation begins to move to the left. This means that the wind  correction of 10° is too great and the aircraft is flying to the  right of course. A slight turn to the left should be made to  permit the aircraft to return to the desired radial.  When the deviation needle centers, a small wind drift  correction of 5° or a heading correction of 355° should be  flown. If this correction is adequate, the aircraft remains  on the radial. If not, small variations in heading should be  made to keep the needle centered and consequently keep the  aircraft on the radial.  As the VOR station is passed, the course deviation needle  fluctuates, then settles down, and the “TO” indication  changes to “FROM.” If the aircraft passes to one side of the  station, the needle deflects in the direction of the station as  the indicator changes to “FROM.”  Generally, the same techniques apply when tracking  outbound as those used for tracking inbound. If the intent is  to fly over the station and track outbound on the reciprocal of  the inbound radial, the course selector should not be changed.  Corrections are made in the same manner to keep the needle  centered. The only difference is that the omnidirectional  range indicator indicates “FROM.”  If tracking outbound on a course other than the reciprocal of  the inbound radial, this new course or radial must be set in  the course selector and a turn made to intercept this course.  After this course is reached, tracking procedures are the same  as previously discussed.  The time from station may also be calculated by using a short  method based on the above formula, if a 10° bearing change  is flown. If the elapsed time for the bearing change is noted  To compute time and distance from a station, first turn the  aircraft to place the RMI bearing pointer on the nearest 90°  index. Note the time and maintain the heading. When the  RMI bearing pointer has moved 10°, note the elapsed time  in seconds and apply the formulas in the following example  to determine the approximate time and distance from a given  station.  [Figure 16-33]  maintain the course. If the aircraft drifts, fly a heading  to re-intercept the course then apply a correction to  compensate for wind drift.  • If minor needle fluctuations occur, avoid changing  headings immediately. Wait a moment to see if the  needle recenters; if it does not, then you must correctly  recenter the course to the needle.  • When flying “TO” a station, always fly the selected  course with a “TO” indication. When flying “FROM” a  station, always fly the selected course with a “FROM”  indication. If this is not done, the action of the course  deviation needle is reversed. To further explain this  reverse action, if the aircraft is flown toward a station  with a “FROM” indication or away from a station  with a “TO” indication, the course deviation needle  indicates in a direction opposite to that which it should  indicate. For example, if the aircraft drifts to the right  of a radial being flown, the needle moves to the right  or points away from the radial. If the aircraft drifts to  the left of the radial being flown, the needle moves  left or in the direction opposite of the radial.  • When navigating using the VOR, it is important to  fly headings that maintain or re-intercept the course.  Just turning toward the needle will cause overshooting  the radial and flying an S turn to the left and right of  course.  Time and Distance Check From a Station Using a  RMI  Figure 16-33.  Time-distance check example.  Tips on Using the VOR  • Positively identify the station by its code or voice  identification.  • Remember that VOR signals are “line-of-sight.” A  weak signal or no signal at all is received if the aircraft  is too low or too far from the station.  • When navigating to a station, determine the inbound  radial and use this radial. Fly a heading that will  16-26  = Time in seconds between bearings  Degrees of bearing change  Minutes to station  = 12 minutes to the station  Time-Distance Check Example  For example, if 2 minutes (120 seconds) is required to fly a  bearing change of 10 degrees, the aircraft is—  120  10 