787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Flight Management, Navigation -
FMC Preflight
Copyright © The Boeing Company. See title page for details.
11.40.22 D615Z003-TBC
Valid airways must:
• contain the fix entered in the TO waypoint, and
• contain the previous TO waypoint, or
• intersect the previous VIA route segment
Dashes change to DIRECT if the TO waypoint is entered first.
Dashes display for the first VIA beyond the end of the route.
Invalid VIA entries display the CDU help window message NOT IN DATA
BASE.
Invalid VIA entries are:
• airways and company routes which do not contain the TO waypoint of the
previous line
• airways that do not intersect the previous airway
• airways or company routes that are not in the navigation database
The start and end waypoints determine whether the entered airway is valid. The
route segment must contain the waypoint entered in the TO position. The TO
waypoint of the previous route segment must be the same as the start point of the
next route segment or a route discontinuity is created between the segments.
Entry of a SID or transition enters the VIA and TO data for the route segments of
the SID. A SID links to the next route segment when the final SID waypoint is part
of the route segment.
When no SID is used, entering an airway on the first line of page 2 initiates an
airway intercept from the runway heading and:
• replaces the airway with dashes in the first line VIA
• shows boxes in the first line TO waypoint
• moves the airway to line 2 after the TO waypoint is entered
• enters the first fix on the airway nearest to being abeam of the departure
heading in the airway line TO waypoint
A route can contain segments formed by the intersection of two airways. Entering
two intersecting airways in successive VIA lines without a TO waypoint causes
the FMC to create an airway intersection waypoint to change from one segment to
the next. The FMC created waypoint intersection (INTC) displays in the first
airway segment TO waypoint.
LACRE3.VAMPS is an example of a SID selection made on the DEPARTURES
page.
V2 and V336 are examples of airway entries.
APP TRANS is an example of a STAR selection made on the APPROACH page.
ILS32R is an example of an approach selection made on the APPROACH page.
October 31, 2007
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