Figure 3-16. EISI Partial Compass VOR Map Mode

Figure 3-15. EHSI Partial Compass Format Unique Indications

TM-1-1510-223-10 Army RC-12 Aircraft Manual
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TM 1-1510-223-10 Figure 3-16. EISI Partial Compass VOR Map Mode The course pointer and course deviation bar displays will be removed. Both bearing pointers will be removed. A full-scale navigation deviation display and deviation bar will be present on the bottom of the EHSI display. This will show the position of the aircraft with respect to the selected course. The map mode deviation display functions as a simple, fixed-card course deviation indicator for VOR or TACAN data. As long as the aircraft is headed within 90 degrees of the selected course or selected radial, and as long as the to-from annunciation is correct, the course deviation indicator (CDI) will be directional; otherwise, it will display reverse sensing and the techniques required for reverse sensing will apply. When the navigation source is a localizer, and the aircraft has a heading greater than 90 degrees to the selected inbound localizer course, the CDI will reverse polarity, but will remain directional. When VOR or TACAN stations are shown on the EFIS map, a solid or dashed course line is drawn through the selected navigation source. The solid line represents the selected inbound course to the station. The dashed line represents the selected outbound radial from the station. If TACAN has been selected as the NAV source, the identifier will be displayed adjacent to the navaid symbol. Crossside navaid identifiers are not available. If the VOR or TACAN stations are out of range of the EFIS map, either a solid magenta or dashed magenta line will appear if within the 90 degree arc. A solid magenta line with an arrow indicates the inbound course to the station. A dashed magenta lines indicates the outbound radial. e. EHSI Long Range Navigation (LRN) Multiple Waypoint Map Mode. The EFIS can display multiple waypoints from a long range navigation (INS) system (fig. 3-17). With the INS programmed for multiple waypoints, and the weather radar range set to a range allowing display of multiple waypoints, selecting the MAP mode will permit up to six (6) to be displayed on the EHSI. When the map mode has been selected, the following will occur: The course pointer and course deviation bar displays will be removed. Both bearing pointers will be removed. The multiple waypoints will appear on the EHSI. 3-36

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