Pilot’s Guide GC 360A Radar Graphics Interface for Weather Radar and KNS 660, KLN 88, KLN 90, KLN 90B, KLN 900, and GNS XLS
TABLE OF CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Systems Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Modes and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Basic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Navigation Graphics . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Graphics from a Single NAV . . . . . . . . . . . .9 Dual NAV Operations . . . . . . . . . . . .
INTRODUCTION Designed to be a powerful navigation tool, the Bendix GC 360A Radar Graphics Unit generates a moving-map display on your weather radar indicator, showing your position with respect to the flightplanned course and waypoints, nearby airports and navaids, and, of course, weather. It continuously updates the graphic picture of your aircraft’s position over the ground, making it easy to visualize the precise navigation situation.
SYSTEM COMPATIBILITY Bendix RDS 81, 82, 84, 86, ART 2000 or 2100 Weather Radar Indicator The navigation information presented by the GC 360A is not to be used for primary navigation. Contents of the checklists are the responsibility of the user/installer. This GC 360A Pilot’s Guide assumes that the operator is already proficient in basic operation of the Long Range Navigation System and weather radar. If not, refer to their respective Pilot’s Guides for operating instructions.
MODES AND FUNCTIONS Select the Standby mode to erase all Nav graphics temporarily from the screen whenever you want an unobstructed view of the weather ahead. You may also select Standby prior to aircraft shutdown and remove power from the GC 360A with the avionics master switch. (1) MODE SELECTOR Activates any of the GC 360A’s six modes of operation. With the mode selector in the OFF position, the radar graphics unit is inoperative.
Upon reaching the bottom of a list, pressing the cursor down key removes the yellow highlight from the radar screen. Pressing it again causes the cursor to reappear, at the top of the first page of the checklist in use. You may also remove the cursor from the radar screen from the top of a checklist and have it reappear at the bottom by using the cursor up key. (3) CURSOR CHECK-OFF KEY In any navigation mode, the checkoff key has two primary functions.
(6) PAGE KEY (9) CANCEL PUSHBUTTON Permits fast review of checklist and index pages. Press the Page key to display pages in consecutive order, returning to the first immediately after displaying the last. Keying Page does not move the cursor position. Removes the Disclaimer message from the radar screen. In navigation modes, pressing the Cancel pushbutton erases graphics related to joystick operation.
BASIC OPERATION To begin radar graphics operation, rotate the GC 360A’s mode selector clockwise to the desired position after turning on the aircraft’s master and avionics master switches.
NAVIGATION GRAPHICS The GC 360A generates navigation data blocks that display the alpha identifier of the active waypoint (from the LNAV) or the frequency of the navaid in use (from the KNR 634A/DME), as well as heading, course and distance information. A series of dashes replaces any navigation information unavailable to the GC 360A.
If the waypoint is a navaid, a Vortac symbol ( ) appears. If it is a pilotprogrammed point in space, a fourpointed star ( ) is used. A cross ( ) symbol indicates that the waypoint is an airport. channel, “No Nav” appears in the appropriate positions on the indicator with the radar graphics units set to the Nav 2 or BOTH modes. Throughout radar graphics operations, it is the pilot’s responsibility to ensure that navigation graphics do not interfere with interpretation of weather depicted by the radar.
DUAL NAV OPERATIONS Station Bearing (NAV 1) Wind Direction Indicator Reference Annunciator Wind Speed Annunciator NAV 1 Data (Cyan) NAV 2 Data (Yellow) Station Bearing (NAV 2) 360˚ circle mode selected Select the BOTH mode to view navigation graphics from Nav 1 and Nav 2 sensors simultaneously. Since this NAV mode requires the weather radar to be n standby mode, weather information will not be displayed along with the navigation graphics.
NAVIGATION FUNCTIONS In any of the three navigation modes, the GC 360A offers a variety of pilot-selectable functions designed to assist in navigation decision-making and altering programmed flight plans while en route. Basic control information is included in “Modes and Functions” on page 4. Following are amplified descriptions of the GC 360A’s more powerful functions. 1. Cursor Check-Off Removes and replaces Nav 1 and Nav 2 course lines on the radar screen.
4. Wind appear on the radar screen in the corresponding data block-left for Nav 1 and right for Nav 2. Displays wind velocity at present position and altitude. The Wind function is available only with the GC 360’s 360˚ circle function activated. 5. Joystick Waypoint With the Waypoint cursor in the desired position, pressing the cursor check-off key transfers its coordinates to the LNAV.
6. Course Deviation Bar 7. Nearest Airports While navigating with the LNAV, the GC 360A generates a color-coded course deviation bar beneath the appropriate navigation data block. With a KNS 660, KLN 88 or KLN 90 interface, each mark right or left of center equals 1NM for enroute mode and 0.25NM for approach mode. With a KLN 90B, KLN 900 or GNS-XLS interface, each mark right or left of center equals 1NM for enroute mode, 0.2NM for terminal mode, and 0.06NM for approach mode.
RADAR GRAPHICS ON A SAMPLE FLIGHT After takeoff from Pal-Waukees’s Runway 16, you receive a vector heading of 265˚ to maintain separation from traffic bound for Chicago O’Hare to the south. Several minutes later you are cleared direct to BDF. Your aircraft is now at Position 1 on the chart illustration. The deviation bar extends full-scale to the left to show the aircraft is at least five miles right of course, while the large cyan dot on the compass rose display shows the current bearing to BDF.
En route and 124 DME from the Springfield Vortac, at Position 2, you press the GC 360A’s Reference “up” key once to view nearby high-altitude, low-altitude and terminal navaids, signified by the three dashes next to the “R” annunciator. The Vichy (VIH), Jefferson City (JEF), Hallsville (HLV), Foristell (FTZ), St. Louis (STL), Macon (MCM) and Quincy (UIN) Vortacs appear on the screen. The course deviation bar indicates the aircraft is some 2.5 miles right of course. 15 © JEPPESEN SANDERSON, INC.
Upon reaching SGF (Position 3) you discover rain shower activity between your position and the Razorback Vortac. Your planned course runs through some of the heaviest precipitation indicating a rough ride is possible. Using the joystick-controlled Waypoint function, you decide that a deviation to the left, to a lat/lon position of N36˚43.2’/W93˚14.9’, will keep you clear of the weather.
At the deviation waypoint (Position 4) you request ATC for clearance direct to the Blue Ridge Vortac in order to speed your flight. With permission granted, you activate the LNAV’s Direct-To function once more to create a new course line direct to BUJ, leaving the Razorback Vortac to the west. The new course line allows you to monitor your aircraft’s progress.
RUNNING CHECKLISTS GENERAL INFORMATION In addition to its primary role as a navigation data interface between your Long Range Navigation System and weather radar, the GC 360A can maintain a library of your aircraft’s normal and emergency checklists. A few simple control functions enable you to step through checklist information, line by line or several lines at a time, while checking off line items or leaving them for review at a later time.
ACTIVATING CHECKLISTS EXECUTING CHECKLISTS The checklist Index page automatically appears on the radar screen when you select either normal or emergency checklist modes. It provides the name of every checklist available in that mode. You may return to the Index page at any time by pressing the GC 360A’s Index key. Checking off the highlighted checklist item with the cursor check-off key changes its color code to green and repositions the cursor to the next magenta line item in sequence.
Returning a checklist to memory by pressing the Index key also restores it to its original, unchecked condition; the next time you select it, the contents will appear as magenta line items with the yellow cursor highlight on the first one. If you want to review a completed checklist before it disappears from the screen, use the Page function or the cursor position controls before you check off the final line item.
PROGRAMMING For programming normal and emergency checklists into the GC 360A’s memory, the KA 68 or KA 68A Pocket Terminal combines all necessary functions in a controller the size of a pocket calculator. Optional equipment with the radar graphics unit, the KA 68/KA 68A enables you to: adding new equipment to the aircraft. The KA 68/KA 68A Pocket Terminal programs checklist information only. It cannot be used to program navigation or route information, or as a substitute for the LNAV’s keyboard. 2.
Each line of checklist information may be up to 30 characters in length, and entries up to 13 lines long are acceptable. Checklist names, however, are limited to one line of 27 characters each. You may divide the memory capacity between normal and emergency modes in any way you choose, simply by positioning th GC 360A’s mode selector to √LST or EMER during programming: other than the total storage limit, there is no maximum amount of information either checklist mode can hold.
3. Press the cursor check-off key to gain access to the new checklist. It will appear as a blank page topped by a white header line and followed by a line which reads “END OF LIST”. Now you are ready to write a new checklist. At your option, rather than pressing the check-off key after naming a new checklist, you may instead continue to enter new names before calling blank checklist pages to the screen. 4.
SPECIAL FUNCTIONS 1. Cursor Check-Off -As an option to using the GC 360A’s cursor check-off key, you may duplicate its function by pressing the Control key and then the letter C. 3. Memory Erase -You may erase the entire 935 line memory shared by the normal and emergency checklist modes by pressing Control and then the letter X. 2. Index Recall -Instead of pressing the GC 360A’s Index key, you may view the Index page on the radar indicator by pressing Control and the letter I.
Printed .5K 5/98 CW AlliedSignal, Inc. Electronic & Avionics Systems 400 North Rogers Road Olathe, Kansas 66062-1294 FAX: 913-791-1302 TELEPHONE: 913-782-0400 006-08412-0000 Rev.
