AvMap ekp iii c User Manual

Altitude above sea level (MSL). Usually refers to field Elevation of an airport. Also refers to a satellite’s height 
above the horizon.

Data on the specific location of a satellite that is collected from that satellite when it is first located and is 
periodically updated while the satellite is being tracked. Remains current for up to 2 hours.

ESTIMATED TIME OF ARRIVAL - The estimated time of day the destination Waypoint will be reached, 
based on your current speed and the distance to destination.

ESTIMATED TIME ENROUTE - The estimated time needed to reach your destination, based on your current 
speed and the distance to destination.

It is collection of information (of the same type) stored on a User C-CARD. Each file must have a unique 
name, ideally one that describes its contents. File names are kept in a directory on each User C-CARD.

FLIGHT PLAN - A planned course of travel, with one to twenty-five legs, each with its own origin and destination.

The line connecting two waypoints within a Flight Plan.

FLIGHT SERVICE STATIONS - Provide pilot briefings en route.

Fuel burn rate in a cruise configuration.

The desired descent path for Vertical Navigation.

GLOBAL POSITIONING SYSTEM - A satellite based navigation system operated by the US Department of 
Defense. It operates 24 hours a day, 365 days a year under any weather conditions.

GEOMETRIC QUALITY - A measurement of the geometry of the satellites used to triangulate the position. A
low GQ is inaccurate and generates a GQ warning. Navigation data should be used with caution when the 
GQ warning appears.

Distance measured along the curved surface of the earth. Over long distances, a Great Circle distance is 
more accurate than a Rhumb Line distance measured from a mercator chart.

GROUND SPEED - The speed over the ground; can vary from air speed as it is affected by the prevailing winds.

HEADING - The direction your aircraft is facing, defined as an angle from true or magnetic north.

HORIZONTAL DILUTION OF PRECISION - It is the index for position-fixing accuracy. The smaller the 
HDOP value, indicates a better position calculation.

HOME (mode)

The Home (called also Screen Amplifier) mode is used to keep the fix position within the visible map. The map is 
scrolled and redrawn automatically when the fix position is moved. When this mode is active the cursor is hidden.

A symbol shown on any display as a representation of a Waypoint .

An abbreviated name that is assigned to an airport or navaid. The identifier may be any combination of letters 
and numbers, up to five characters in length.

INTERSECTION - A Waypoint defined by any combination of courses or radials between two or more 
navaids. Enroute and terminal intersections are part of the EKP-III Database.

KTS KNOTS - One Knot is a unit of speed equal to one Nautical Mile per hour.
LANDMARKS

Any prominent object such as monument, building, silo, tower, mast, on land which can be used in 
determining a location or a direction

LATITUDE - The distance north or south of the equator, measured in an arc with the equator being  0° and 
the poles being 90°.

LONGITUDE - The distance east or west of the Prime Meridian (0°), which intersects Greenwich, England.
The range is 0°–180°E, moving east of 0° and 0°–180°W, moving west of 0°.

The Loran chains are groups of transmitting stations that use timed radio pulse transmissions.

The migrating pole where the earth’s magnetic lines converge. The north magnetic pole is some distance 
from true north at 76.1°N 100°W.

Reference points related to cursor position.

The Elevation (height above the horizon, measured in Degrees) below which the EKP-III will not search for 
satellites. The Mask Angle used by the EKP-III  is variable. It starts at 8° and under certain conditions, may 
drop as low as 0°.

MINUTE - A unit of measure, equal to1/60th of one Degree of a circle.

This Minimum Off-Route Altitude provides minimum altitudes for terrain and obstruction clearance within the 
section outlined by the Latitude and Longitude lines. Mora values clear all terrain and obstructions by 1,000’
in areas where the highest terrain and obstructions are 5,000’ MSL or lower. Mora values clear all terrain and 
obstructions by 2,000’ in areas where the highest terrain and obstructions are 5,000’ MSL or higher. Moras 
are not shown where there is no published data.

The Moving Map is the default state of the software. This mode represents the Moving Map screen and 
Data Window.

METER - A metric distance measurement equal to 39.37 inches.

Any topographic feature formed by the action of natural processes: coastlines, relief, glaciers, ...

NON-DIRECTIONAL BEACON - A low/medium-frequency navigation aid that sends non-directional 
signals that can be used for navigation.

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EKP III USER MANUAL