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CHAPTER FIVE
STANDARD CORRECTIONS FOR 180 KNOTS GROUND SPEED
CORRECTION
DISTANCE
TIME(min)
OFF COURSE
1/2 mile
10º
for
1+00
1 mile
10º
for
2+00
1 mile
20º
for
1+00
1 ½ miles
10º
for
3+00
1 ½ miles
30º
for
1+00
2 miles
10º
for
4+00
2 miles
20º
for
2+00
3 miles
10º
for
6+00
3 miles
20º
for
3+00
3 miles
30º
for
2+00
Example
After turning, the aircraft is 1½ NM right of track. Initial compensated heading is 053º, and
current time is 15+20. Call for the correction in the following manner: "Turn, Left 043. "Time
in 15+20, time out 18+20". A technique is to annotate your chart with a mark on the course line
one mile past the 18 minute tick mark (18+20). This mark serves as a memory jogger to take the
correction out at the appropriate time.
From the table in Figure 5-6, note all standard corrections are in 10, 20, or 30 degree heading
changes (to compensated heading) and for increments of 1 minute. For example, a 20º correction
for 1+30 to correct for 1½ NM is not permitted in this stage of training. An acceptable correction
would be 10º for 3 minutes or 30º for 1 minute.
While the amount of time is always in multiples of 1 minute, if a subsequent checkpoint shows
the aircraft back on track prior to the correction being completed, terminate the correction.
Using the previous example, if at 17+00 the aircraft is nearly on course (determined from an
intermediate checkpoint), the correction might terminate as follows: "Our position is nearly on
course; Turn Right 053º." Likewise, if at 17+00 the aircraft is still 1NM right of track, update the
correction for one additional mile. This extension might sound as follows "At time 17+00 I fixed
our position one mile right of track, time out for course correction is now 19+00."
Example
Preflight course is 355º and compensated heading is 359º. At time 6+20 you fly 1/2 NM right of
a bridge preflighted to be 2½ NM left of course. Assuming compensations have already been
applied, what standard corrections can be made at 6+40 to get back on course?
5-14
FLIGHT PROCEDURES

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