Garmin 500W Series Pilot's Manual & Reference page 70

12 - MESSAGES
ABBREVIATIONS &
NAV TERMS
TKE — Track Angle Error
TMA — ICAO Terminal Control Area
TRANS — Transition
TRFC — Traffic
TRK — Track (also Ground Track) Angle
TRSA — Terminal Radar Service Area
twr — Tower
TX — Transmit
uni — Unicom
UTC — Coordinated Universal Time (also
GMT or "zulu")
UTM/UPS — Universal Transverse Mercator /
Universal Polar Stereographic grids
VAL — Vertical Alarm Limit
VAR — Variation
VER — Version
VFOM — Vertical Figure of Merit
VFR — Visual Flight Rules
VLOC — VOR/Localizer Receiver
VNAV — Vertical Navigation
VOL — Volume
VOR — VHF Omnidirectional Radio Range
VPL — Vertical Protection Level
VS — Vertical Speed
VSR — Vertical Speed Required
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WAAS — Wide Area Augmentation System
WPT — Waypoint
WX — Weather
XTK — Crosstrack Error
190-00357-00 Rev B
9/7/2007 3:11:08 PM