787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Flight Management, Navigation Chapter 11
FMC Takeoff and Climb Section 41
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 11.41.1
11.41 Flight Management, Navigation-FMC Takeoff and Climb
Flight Management, Navigation41 F MC Takeoff and ClimbFMC Takeoff and Climb
Introduction
The FMC takeoff phase starts with the selection of takeoff/go–around (TO/GA).
Preparation for this phase starts in the preflight phase and includes entry of the
TAKEOFF REF page data.
The takeoff phase changes to the climb phase when the FMC commands climb
thrust. The climb phase continues to the top of climb point, where the cruise phase
starts.
During takeoff and climb, the specific page listed below is used to:
• TAKEOFF REF page – make last minute changes to the departure runway
• DEPARTURES page – make last minute changes to the SID
• CLIMB page – modify climb parameters and monitor airplane climb
performance
• RTE X LEGS page – modify the route and monitor route progress
• PROGRESS page – monitor the overall progress of the flight
• THRUST LIM page – select alternate climb thrust limits
• DEP/ARR INDEX page – select an approach during a turn–back
Takeoff
When changes are made to the departure runway and SID, the TAKEOFF REF
and DEPARTURES pages must be modified to agree. The modified data are
entered the same as during preflight.
With correct takeoff parameters, the FMC commands the selected takeoff thrust
when the TO/GA switch is pushed. During the takeoff roll, the autothrottle
commands the thrust and the FMC commands acceleration to between V2+15 and
V2+25 knots, based on rate of rotation.
Usually, LNAV and VNAV are armed before takeoff. When armed before takeoff,
LNAV activates at 50 feet radio altitude and commands roll to fly the active route
leg. VNAV activates at 400 feet above runway elevation and commands pitch to
fly the climb profile.
Climb
At acceleration height or the first movement of the flap lever during flap
retraction, VNAV commands acceleration to a speed 5 knots below the flap
placard speed for the existing flap setting. When flaps are retracted, VNAV
commands the speed displayed on the SPD TRANS line.
August 14, 2009
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