102
Glossary of Terms
Appendix D
Accuracy — Estimated position accuracy in feet or meters.
Altitude — Height above mean sea level (MSL).
Avg Speed — The average of all second-by-second speed readings since last reset.
Bearing — The compass direction from your current location to a destination.
Course — The desired course between the active ‘from’ and ‘to’ waypoints.
Course To Steer — The recommended direction to steer in order to reduce cross-track error and return to the
course line.
Cross-Track Error — The distance you are off a desired course in either direction, left or right.
DOP — Dilution of Precision. A measure of satellite geometry quality (i.e., number of satellites received and where
they are in the sky relative to one another).
Distance (Destination) — The ‘great circle’ distance from current location to a GOTO destination, or the fi nal
waypoint in a route.
Distance (Next) — The ‘great circle’ distance from current location to a GOTO destination, or the next waypoint
in a route.
DTK — Desired Track. The compass course between “from” and “to” waypoints in a route. (Same as Course.)
ETA (Destination) —
Estimated Time of Arrival. The estimated time you will reach a GOTO destination, or the
fi nal waypoint in a route.
ETA (Next) —
Estimate Time of Arrival. The estimated time you will reach a GOTO destination, or the next
waypoint in a route.
ETE (Destination) — Estimated Time Enroute. The estimated time required to reach a GOTO destination, or the
fi nal waypoint in a route.
ETE (Next) — Estimated Time Enroute. The estimated time required to reach a GOTO destination, or the next
waypoint in a route.
Est. Time to VNAV — The estimated time required to reach the initial descent point in a VNAV profi le.
Fuel — The fuel required to travel from current location to the indicated route waypoint.
Glide Ratio — The ratio of horizontal distance travelled to vertical distance travelled. For example, a 6:1 glide
ratio indicates a 1000’ vertical descent for every 6000’ horizontal distance travelled.
190-00283-00Backup.indd 102 12/8/2002, 8:09:55 PM
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