787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Flight Management, Navigation -
Flight Management System
Operation
Copyright © The Boeing Company. See title page for details.
11.31.28 D615Z003-TBC
The approach condition may be delayed if the flight crew manually inserts,
bypasses, or deletes an approach waypoint on the LEGS page
The FMC transitions out of "on approach" under the following conditions:
• the pilot selects TO/GA
• the airplane lands
• the airplane flies beyond the last waypoint in the approach (missed
approach waypoint or runway). The VNAV page title changes from "ACT
xxxxx DES" to "ACT END OF DES"
When the FMC is “on approach”, the following features are available:
• the IAS/MACH window can be opened and the command speed can be set
while VNAV remains in VNAV PTH descent; VNAV commands the set
speed
• the MCP altitude can be set above the airplane altitude for the missed
approach. When the MCP altitude setting is at least 300 feet above the
current airplane altitude, VNAV continues to command a descent
• VNAV remains in VNAV PTH and follows the descent path unless the
airplane accelerates to within 5 knots of the current flap placard and the
airplane rises more than 150 feet above the path. In this case, VNAV PTH
changes to VNAV SPD
• when a glidepath angle is specified for one or more legs on the approach, it
displays on the LEGS page and VNAV provides VNAV PTH guidance at
the displayed angle. When sequencing a waypoint prior to a descent leg
specified by a glidepath angle, VNAV commands level flight until the
airplane intercepts the descent path
Note: Display of a specified glidepath angle is not limited to approaches. A
glidepath angle may be defined for a leg in a STAR and displays on the
LEGS page for the procedure.
Selection of another approach can be accomplished on the ARRIVALS page. An
along-course intercept to the next logical approach waypoint in the new approach
can be selected on the “INTC CRS TO” line on the LEGS page or by selecting the
"XXXXX INTC>" prompt on the ARRIVALS page.
Integrated Approach Navigation
Integrated Approach Navigation allows the use of consistent procedures for all
types of instrument approaches. Any approach that has a Flight Path Angle (FPA)
published in the navigation database can be flown using procedures, indications
and alerts similar to those used for an ILS approach.
August 14, 2009
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