Garmin GPS 400W Pilot's Manual & Reference page 196

11 - MESSAGES
ABBREVIATIONS &
NAV TERMS
NATNL— National
NAV— Navigation
NAVAID— Navigational Aid
NDB— Non-Directional Radio Beacon
NM— Nautical Miles
NRST— Nearest
NUM— Number
OBS— Omnibearing Selector
OCN— Oceanic
PDA— Premature Descent Alert
P.POS— Present Position
PROC— Procedure(s)
PROV— Province
PTK— Parallel Track
PWR— Power
RAD— Radial
RAIM— Receiver Autonomous Integrity Monitoring
REF— Reference
REQ— Required / Requirements
RESTRICTD— Restricted
RNG— Range
RTC— Required Terrain Clearance
RX— Receive
SBAS— Space-Based Augmentation System
SID— Standard Instrument Departure
Sml— Small
186
SPD— Speed
SQ— Squelch
SRFC— Surface
STAR— Standard Terminal Arrival Route
SUA— Special Use Airspace
SUSP— Waypoint sequencing suspended
°T— Degree True
TACAN— Tactical Air Navigation
TAS— True Airspeed
TAT— Total Air Temperature
TEMP— Temperature
TER— Terrain
TERM— Terminal
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
190-00356-00 Rev B