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The LARGE knob will select the higher level Nav functions: Nav pages, Parallel Track Offset, GPS Position, Countdown Timer, and the FROM/TO/NEXT Waypoints. The SMALL knob will look at the pages available for each function; a diamond (·) will be shown on the lower, right side of the display if more pages are available. The Nav Home Page is a default page that is the first page available in the Navigation function. The Nav Home Page is not customizable. The information in the Home Page shows the Destination Waypoint identifier, Estimated Time En Route, CDI, Bearing, and Range (distance) to the destination waypoint. Ete aEUG 00:22 1.10 “.. Brg 082. 74nmY Turn the SMALL knob to view the other available Navigation displays. 3-1 Navigation Basics TO WPT FROM WPT North Track Angle Error (Tae) Present Position BRG TRK DTK Distance Off Track or Cross Track Deviation DTK TAE = Difference between Track and Desired Track Bearing = Direction to waypoint Course = Desired Track between specific waypoints Desired Track = Course direction Track = Direction the aircraft is going Heading = Direction the aircraft is pointed Heading Course Navigation Terms and Abbreviations Autonav The Autonav feature lets you select certain Nav display choices and have them rotate in sequence displaying each one from one to nine seconds. The selection of displays and sequencing time is performed in the Nav Info part of the System Functions (see page 1). 1. Start Autonav by pressing ENTER while displaying ENTER the Nav Home Page, or one of its sub-pages. Ete aEUG 00:22 1.10 “.. Brg 082. 74nmY 2. Stop Autonav rotation by pressing any key or turning either knob. Leaving the Nav function will also disable Autonav. Relative Bearing Indicator Navigation Basics The Relative Bearing Indicator is an arrow next to the Bearing value that indicates an approximate bearing to a waypoint or airspace relative to the aircraft’s current track when your current ground speed is more than 5 knots. The following illustration describes the bearing range for each arrow. M N O P Q R \ T 23. 68. 113. 158. 203. 248. 293. 338. to to to to to to to to 67. 112. 157. 202. 247. 292. 337. 22. Near 1 to PPos PDX AIRPORT Brg 010. 39.7nm· Nav Pages The Apollo GX provides a wide variety of navigation information. This information is provided on a number of displays that you can view by turning the LARGE knob. Some displays have a diamond in the lower right corner; turn the SMALL knob to view more related information. Estimated Time Waypoint Estimated Time Enroute Label Indentifier Enroute Value "Diamond" indicates ete aEUG 00:16 more pages can be Distance selected with the Off Track 1.120 “.. Small knob. · Bearing Label Brg 173 45.5nm Graphic TO/FROM Indicator Bearing Value Graphic CDI Range to Destination Indicator Waypoint from your Present Position Navigation Basics ete aEUG 00:16 1.120 “.. Brg 173 45.5nm · ete aEUG 00:16 1.120 “.. 173 Trk172 Estimated Time En Route (Ete) ETE is to the current TO (destination) waypoint from your present position based on the current ground speed. The units shown are in hours and minutes, 00:00 to 99:59, and in seconds when less than one hour is displayed. If the ground speed is less than or equal to 5 knots, the GPS receiver does not have a valid position, or there is no TO waypoint, the ETE value will be shown as dashes. If there is no TO waypoint, the TO identifier location will be replaced by dashes. Bearing (Brg) Bearing is the angle from your present position to the TO waypoint. Bearing is shown from 0 to 359 degrees in one degree increments. Bearing is computed using the magnetic variation at the Present Position. The Bearing value will be dashed if the FROM or TO waypoints are blank or the GPS receiver does not have a valid position. BearingBearing Bearing listed in the direction Track Angle Value Label Value you are off-course (value will switch to either side as required) Range (Rge) The distance from your present position to the TO waypoint. Units can be set as either nautical miles or kilometers in the Nav Info section of the System functions (see page 6). Nautical mile units are 0.00 to 9.00 nm in 0.01 nm increments, 10.0 to 99.9 nm in 0.1 nm increments, and 100 to 9999 nm in 1 nm increments. Kilometer units are 0.00 to 99.99 km in 0.01 km increments, 100.0 to 999.9 km in 0.1 km increments, and 1000 to 9999 km in 1 km increments. The Range value will be dashed if the FROM or TO waypoints are blank or the GPS receiver does not have a valid position. Navigation Basics Course Deviation Indicator (CDI) and Distance Off Track The triangle symbol (“) referenced to a bar graph shows your position relative to being on-course. When the bar graph is to the right of the triangle, you must fly right to return on-course. In the example below, the bar graph indicates you are off-course to the right. Fly the aircraft in the direction of the bar graph (left) to return on-course. ete aSLE 00:37 #### “ 4.005 Brg 173. 42.4nm CDI Sensitivity = 0.3 nm ...

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