Navigation Terms - Garmin GPS 400 Pilot's Manual And Reference

12.3 NAVIGATION TERMS

The following navigation terms are used on the GPS 400 and in this Pilot' s Guide. Refer to Figures 12-1 and 12-2 for
graphic representation of navigation terms.
NORTH
WPT 1
Figure 12-1 Illustrated NAV Terms
Term
ALT (altitude) Height above mean sea level (MSL)
BRG (bearing)
The compass direction from the present position to a destination waypoint
CAS (calibrated
Indicated airspeed corrected for instrument errors
airspeed)
The recommended direction to steer in order to reduce course error or stay on course
CTS (course to steer)
Provides the most efficient heading to get back to the desired course and proceed along the
flight plan
CUM (cumulative)
The total of all legs in a flight plan (cumulative distance)
DIS (distance) The "great circle" distance from the present position to a destination waypoint
DOP (dilution of
A measure of satellite geometry quality on a scale of one to ten (lowest numbers are best,
precision)
highest numbers are worst)
DTK (desired track) The desired course between the active "from" and "to" waypoints
A measure of fuel consumption, expressed in distance per fuel units (e.g., nautical miles per
EFF (efficiency)
gallon)
ENDUR (endurance)
Flight endurance, or total available flight time based upon available fuel
190-00140-60 Rev. E
WPT 2
TIME AND DISTANCE
CURRENT ALTITUDE
AND POSITION
Figure 12-2 Illustrated Vertical NAV Terms
Description
GPS 400 Pilot's Guide and Reference
SECTION 12 – MESSAGES,
ABBREVIATIONS, & NAV TERMS
TO PROFILE
TARGET ALTITUDE
AND POSITION
DISTANCE TO TARGET
AIRPORT
12-11