T-45C TS, ADV, & IUT RIFP-01
Introduction to Radio Instruments
B.
Arcing - chord method
Sg 4, fr 4, p1
NOTE: The chord method is usually used when
the aircraft is more than 12 miles DME from the
station.
1.
Tune and identify station and select TACAN
steering
RADIAL TO ARC INTERCEPT
2.
Determine direction to turn
PROCEDURE
3.
Determine desired lead point
Sg 4, fr 4, p2
4.
Initiate turn when DME equals radius of arc
plus or minus desired lead using a 1/2 SRT
AOB
5.
Monitor bearing pointer and DME to
determine roll-out
RADIAL TO ARC INTERCEPT
6.
Position aircraft so that head of bearing
PROCEDURE
pointer is between 5 and 10 degrees ahead
of wingtip position
Sg 4, fr 4, p3
7.
Fly straight short legs allowing head of
bearing pointer to reposition between 5 and
10 degrees behind wingtip position
8.
Turn aircraft to reposition the head of
bearing pointer from behind to between 5
and 10 degrees ahead of wingtip position
RADIAL TO ARC INTERCEPT
PROCEDURE
NOTE: If a crosswind makes the DME
Sg 4, fr 5
difficult to maintain, increase or decrease
the number of degrees you let the head of
the pointer move ahead or behind the
wingtip position.
RADIAL TO ARC INTERCEPT
PROCEDURE
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