User manual GARMIN CNX 80 INTEGRATED AVIONICS SYSTEM CNX80 GENERIC AFM IN WORD FORMAT DOC FILE

[. . . ] After highlighting the new Destination airport via a method above, press the Dest key. It throws out your existing flight plan and replaces it with a one leg flight plan consisting of a Direct-to the new Destination airport. It replaces the old Destination airport with the new Destination airport, allowing you to select the next approach or arrival at that airport. Once the Destination airport has been changed you may select any approach you wish and load it into the flight plan. [. . . ] It has a specific task, mainly to call your attention to a potential problem in your flight plan that you must rectify. Essentially think of it as a gap in your flight plan that you must resolve, and the CNX80 is asking for specific navigation information. The CNX80 is asking for your input to determine how to navigate between the waypoints adjacent to the discontinuity (deleting a discontinuity equates to flying direct between those waypoints), or: 2. Example: You've selected a STAR or an approach with transitions that don't match, i. e. you select a STAR that terminates at waypoint A and the instrument approach you selected starts at waypoint B. The CNX80 sees this as a potential problem and inserts a discontinuity flagging the problem for you to fix. If you made an error in selecting the wrong transition on the approach, you can reselect the approach and select the correct transition, which removes the discontinuity, or you may highlight the discontinuity and delete it if you really want to go from waypoint A direct to waypoint B. The fundamental design consideration here is that instead of making a potentially incorrect assumption and stringing waypoints together without any further consideration, the CNX80 will ask you for resolution to the problem as PIC. Again, if you build your flight plan without any enroute or procedural errors, most likely you won't see discontinuities very often. Should you ever fly into a discontinuity, this will be annunciated on the CNX80 and the system will roll wings level and continue on the same course it had prior to reaching the waypoint before the discontinuity. Intercepting an Airway There are a couple of ways this typically happens when you're dealing with ATC (but of course there are always the really creative controllers that have something unique in mind for you, ) usually a vector to intercept and occasionally the outbound radial to intercept an airway. Vectors onto an airway are simple to deal with using your autopilot, or merely flying the heading assigned. By observing the CNX80 you can determine on the moving map approximately where you will intercept the airway (between waypoints CARRO and GLORR for example, ) then simply select the Direct To page and scroll down to the next waypoint, GLORR in this example, and press Flyleg. This activates that leg of the flight plan for navigation and you will see that on the bottom of the page in magenta. By engaging the autopilot (roll steering capable, ) the CNX80 will drive you to the active leg and then sequence the flight plan normally. For non roll steering capable autopilots, wait until the needle comes alive and then engage the NAV mode, making sure you've set the course appropriately. For radial to intercept an airway, this can be accomplished a couple of different ways, depending upon what's most convenient. You can set the frequency on the VHF Nav radio using the NRST function and selecting VOR's and using old fashioned VHF Nav radio skills, or you can select the VOR if it's in your flight plan or directly from the database and use the OBS mode located on the Direct To page. This reads your HSI or CDI resolver and allows you to use the GPS WAAS navigation function to essentially treat any waypoint as a VOR station. The system automatically goes into suspend mode and the outbound radial you've selected will be shown on the moving map. As you reach the intercept of the airway, simple press the SUSPend key and the CNX80 will capture the airway and fly onto it. For non roll steering autopilots, wait until you are within the turning radius of the autopilot, press the SUSPend key and select the new course. Done in a timely fashion, you should not have to leave autopilot NAV mode. Roll Steering vs. Deviation Only Autopilots The vast majority of the existing autopilot installations are deviation only autopilots. [. . . ] There are approximately 750 LNAV/VNAV approaches in existence, and LPV approaches are in work and being commissioned as this newsletter is being written. The FAA hopes to have as many as 300 new approaches at various airports approved over the next year or so. There is a production schedule for these approaches which we expect will change as the process proceeds and greater familiarity with the development process is gained. There will also be automatic flight plan transfer and user waypoint transfer between CNX80's in dual installations for V2. 0. [. . . ]