Garmin GPS 400 Pilot's Manual And Reference page 153

Abbreviations
The following is a list of abbreviations
used, and their meanings:
ACTV
— Active
ALT
— Altitude
APPRCHING
—Approaching
APR
— Approach
APT
— Airport
ARSPC
— Airspace
ARTCC
— Air Route Traffic Control
Center
ARVL
— Arrival
AUX
— Auxiliary
AVGAS
— Aviation-grade Gasoline
AVTN
— Aviation
BARO
— Barometric Pressure
BRG
Bearing To
—
°C
— Degree Celsius
CAS
— Calibrated Airspeed
CDI
— Course Deviation Indicator
CLR
— Clear
COM
— Communications Transceiver
CRSR
— Cursor
CTA
— ICAO Control Area
CTAF
— Common Traffic Advisory
Frequency
CTR
— Center (see ARTCC)
CTS
— Course To Steer
CUM
Cumulative
—
DB
— Database
DEN
— Density
DEP
— Departure
DIS
— Distance
DME
— Distance Measuring Equipment
DOP
Dilution of Precision
—
DTK
— Desired Track
EFF
— Efficiency
ELEV
— Elevation
ENDUR
—Endurance
ENR
— En Route
MESSAGES,
aBBREVIATIONS
& nav tERMS
ENT
— Enter
EPE
— Estimated Position Error
ESA
— En Route Safe Altitude
ETA
— Estimated Time of Arrival
ETE
— Estimated Time En Route
°F
Degrees Fahrenheit
—
FF
— Fuel Flow
FOB
— Fuel On Board
FPL
— Flight Plan
fpm
— Feet Per Minute
FREQ
— Frequency
FSS
— Flight Service Station
ft
Feet
—
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