Track (TRK):
The imaginary line that the flight path
of an airplane makes over the earth.
Track Angle:
The angle of your actual direction of
travel. Track angle is computed using the magnetic
variation at the Present Position.
Track Angle Error (TAE):
The difference between
the Desired Track and the Track Angle (Dtk - Trk =
Tae). A letter is shown next to the Track Angle Error
value showing the direction of error in reference to
the current Track.
True North:
Geographic north, at the earth’s north
pole.
Tower
(TWR):
Airport
tower
communication
frequency.
U
UNICOM:
The radio frequencies assigned to
aeronautical advisory stations for communication
with aircraft. Unicoms may provide such airport
information as active runway, wind direction and
velocity and other conditions of importance to pilots.
UTC (Universal Time Coordinate):
Greenwich
Mean Time, or the time at the Prime Meridian in
Greenwich, England. Also referred to as Zulu time.
15-10
Glossary
TO
WPT
FROM
WPT
North
Track Angle
Error (Tae)
Present
Position
TRK
DTK
Summary of Contents for 50
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