UJPT, E2-C2, ADV, & IUT RIFP-01
Introduction to Radio Instruments
Sg 4, fr 9
OUTBOUND
INBOUND
6 DME
ARC TO RADIAL INTERCEPT ADJUSTMENTS
E.
Adjustment techniques (Arc to Radial - Radial to Arc)
1.
Arc to radial intercept
a.
Inbound radial intercepts will require a greater lead
than outbound because the aircraft is turning more than
90 degrees
b.
For radial intercepts from arcs less than approximately
10 DME, an adjustment must be applied to the arc to radial
formula to compensate for turns outbound of less than
90 degrees and turns inbound of more than 90 degrees
(1) Degrees to turn outbound are equal to 90 minus the
number of lead radials determined by formula
(2) Degrees to turn inbound are equal to 90 plus the
number of lead radials determined by formula
(3) As a rule of thumb, reduce or increase the lead radials
determined by formula by one-third
(8-97) Change 1
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