Garmin GPS 400 Pilot's Manual And Reference page 156

MESSAGES,
8
aBBREVIATIONS
& nav tERMS
Navigation Terms
The following navigation terms are used
on the GPS 400:
ALT(altitude)
—Height above mean sea
level (MSL).
BRG(bearing)
—The compass direction
from your present position to a destination
waypoint.
CAS(calibrated airspeed)
—Indicated
airspeed corrected for instrument errors.
CTS(course to steer)
—The recommend-
ed direction to steer in order to reduce
course error or stay on course. Provides the
most efficient heading to get back to the
desired course and proceed along your
flight plan.
NORTH
WPT 1
CUM(cumulative)
—The total of all legs
in a flight plan (such as "cumulative dis-
tance").
DIS(distance)
—The "great circle" dis-
tance from your present position to a desti-
nation waypoint.
DOP(dilution of precision)
—A measure
of satellite geometry quality on a scale of
one to ten (lowest numbers are best, highest
numbers are worst).
DTK(desired track)
—The desired course
WPT 2
between the active "from" and "to" way-
points.
EFF(efficiency)
—A measure of fuel con-
sumption, expressed in distance per fuel
units (e.g., nautical miles per gallon).
ENDUR(endurance)
or total available flight time based upon
available fuel.
EPE(estimated position error)
sure of satellite geometry quality and addi-
tional factors, expressed as a horizontal posi-
tion error in feet or meters.
ESA(en route safe altitude)
ommended minimum altitude within a ten
mile radius of your course on an active
flight plan or direct-to.
ETA(estimate time of arrival)
estimated time at which you will reach your
destination waypoint, based upon current
speed and track.
ETE(estimated time en route)
time it will take to reach the destination
waypoint, from present position, based upon
current speed and track.
—Flight endurance,
—A mea-
—The rec-
—The
—The