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|  T-6A INSTRUMENT NAVIGATION
CHAPTER FOUR
360
RADIUS OF
TURN
IMAGINARY
"B"
POINT
"A"
090
360
.8 NM 150 kt STD Rate
360
.6 NM 120 kt STD Rate
360
360
360
360
"D"
11 DME
"C"
"E"
360
360
10 DME
9 DME
10 DME
360
"B"
360
"A"
270 R
WIND
10.8 DME
Figure 4-7 Radial to Arc
COMMON ERRORS
1.
Not providing the accurate lead for turns, thus overshooting or undershooting both the arc
and the new course. Think ahead and remember, take the wind into account!
2.
Allowing the head of the bearing pointer to fall too far below the 90 benchmark or
positioning it too high above the benchmark.
3.
Turning in the wrong direction to get back on the arc. Remember, the head of the bearing
pointer points at the station. If you need to get closer to the station, turn toward the head of the
bearing pointer.
4.
Using too great an intercept angle to reestablish the aircraft on the arc.
5.
Not placing the head of the bearing pointer on the 90 benchmark when initially
intercepting the arc.
INSTRUMENT NAVIGATION
4-23
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