OPERATOR’S
MANUAL
CMA-9000 FLIGHT MANAGEMENT SYSTEM
Page C-17
November 19, 2009
ROUTE DISCONTINUITY
When the active route contains a discontinuity, all route waypoints within the current EFIS map scale are shown
on the EFIS display. Waypoints following the discontinuity are left unconnected*. This example represents an
active route with a discontinuity between waypoints YZT and PRYCE. For more information on route
discontinuities, refer to Section 5.
* For the Rockwell Collins EFIS-84, the entire flight plan disappears from the Navigation Display once the last
waypoint before a discontinuity is sequenced. For such as case, ideally, the crew should have taken action in their
flight plan to ensure that discontinuities are removed prior to sequencing the last waypoint before the discontinuity.
This would ensure continuous availability of flight data throughout the route.
If the FMS does sequence the last waypoint prior to a discontinuity and the flight plan disappears from the display
system, the operator can, amongst other things, perform a DIRECT-TO in order to restore the flight plan.
MAP CENTER STEP
The reference position of the EFIS map display is normally the aircraft position, represented by a triangular
symbol at the bottom of the display. With the Map Center Step feature, this reference position can be changed
to the position of any route waypoint, making it possible to preview the entire route on the EFIS without
changing aircraft position. This example shows the resulting EFIS display after waypoint YZT in the previous
example has been moved to the bottom of the display using the Map Center Step feature.
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