787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Flight Management, Navigation -
FMC Descent and Approach
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 11.43.9
Displays the straight line distance to the entered waypoint.
Displays the speed/altitude constraint for the entered waypoint.
A manual waypoint entry displays boxes for manual speed and altitude entry.
Distance to the clean descent circle. The distance is negative when a clean descent
is no longer possible.
A clean circle assumes no drag devices are used for descent.
A direct descent to the DES TO waypoint at a SPD/ALT constraint is possible
when the airplane is outside the clean circle. The clean circle displays on the ND
when the DISPLAY prompt is ON.
Distance to the drag descent circle. The distance is negative when a drag descent
is no longer possible.
A drag circle assumes speedbrakes are UP for descent.
A direct descent to the DES TO waypoint at a SPD/ALT constraint is possible
when the airplane is outside the drag circle. The drag circle displays on the ND
when the DISPLAY prompt is ON and the airplane is inside the clean circle.
Push – alternates between ON and OFF.
ON – displays the clean and drag circles on the ND. The drag circle does not
display until the airplane position is inside the clean circle.
OFF – removes the clean and drag circles from the ND.
Selected state is large green font, otherwise small white font.
Automatically changes to OFF within 150 feet of the waypoint constraint altitude.
Engine Out Descent
There are no specific engine out pages for descent. Use the two engine descent
planning features and pages.
Approach
During approach, roll and pitch modes usually change to the approach guidance
supplied by navigation radios. The FMC continues to calculate and show present
position and can supply LNAV and VNAV approach guidance for certain types of
approaches when radio navigation is not used.
2
Distance To Go (DTG)
3
Speed/Altitude (SPD/ALT)
4
TO CLEAN
5
TO DRAG
6
DISPLAY
October 31, 2007
To Next Page
Loading...
