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thrust lever position, but thrust levers can be positioned manually. The HOLD
mode remains engaged until VNAV engagement or another thrust mode is
selected.
Note: Takeoff into headwind of 20 knots or greater may result in HOLD before
the autothrottle can make final thrust adjustments.
October 31, 2006
777/787 Flight Crew Training Manual
Takeoff and Initial Climb
Copyright © The Boeing Company. See title page for details.
3.8 FCT 777/787 Preliminary (TM)
The HOLD mode protects against thrust lever movement if a system fault occurs.
Lack of the HOLD annunciation means the protective feature may not be active.
If HOLD annunciation does not appear, no crew action is required unless a
subsequent system fault causes unwanted thrust lever movement. As with any
autothrottle malfunction, the autothrottle should then be disconnected and desired
thrust set manually.
If full thrust is desired when HOLD mode is displayed, the thrust levers must be
manually advanced. When making a V1(MCG)-limited takeoff, do not exceed the
fixed derate thrust limit except in an emergency.
After the airplane is in the air, pushing a TO/GA switch advances the thrust to
maximum available thrust and THR REF is annunciated.
Initiating Takeoff Roll Using HUD System
787-8
Normal procedures apply, however, pilots must be aware that the captain’s
attention is devoted almost exclusively to outside/HUD cues. This requires that
the first officer’s attention be devoted to head down instruments more than during
the normal takeoff roll.
The captain monitors the takeoff roll by using visual cues and HUD symbology.
Use HUD guidance symbology, runway lighting and runway markings to maintain
runway centerline. Rotate using the airplane reference symbol on the HUD.
October 31, 2006
777/787 Flight Crew Training Manual
Takeoff and Initial Climb
Copyright © The Boeing Company. See title page for details.
FCT 777/787 Preliminary (TM) 3.9
Rotation and Liftoff - All Engines
787-8
Takeoff speeds are established based on minimum control speed, stall speed, and
tail clearance margins. When a smooth continuous rotation is initiated at VR, tail
clearance margin is assured because computed takeoff speeds depicted in the
airport analysis or FMC are developed to provide adequate tail clearance.
777-200 - 777-300ER
Takeoff speeds are established based on minimum control speed, stall speed, and
tail clearance margins. Shorter bodied airplanes are normally governed by stall
speed margin while longer bodied airplanes are normally limited by tail clearance
margin. When a smooth continuous rotation is initiated at VR, tail clearance
margin is assured because computed takeoff speeds depicted in the airport analysis
or FMC are developed to provide adequate tail clearance.
Above 80 knots, relax the forward control column pressure to the neutral position.
For optimum takeoff and initial climb performance, initiate a smooth continuous
rotation at VR toward 15° of pitch attitude. The use of stabilizer trim during
rotation is not recommended. After liftoff use the flight director as the primary
pitch reference cross checking indicated airspeed and other flight instruments.
777-200 - 777-300ER
Note: Do not adjust takeoff speeds or rotation rates to compensate for increased
body length.
With a consistent rotation technique, where the pilot uses approximately equal
control forces and similar visual cues, the resultant rotation rate differs slightly
depending upon airplane body length.
Using the technique above, liftoff attitude is achieved in approximately 4 seconds.
Resultant rotation rates vary from 2 to 2.5 degrees/second with rates being lowest
on longer airplanes.
Note: The flight director pitch command is not used for rotation.
Typical Rotation, All Engines
The following figure shows typical rotation with all engines operating.
October 31, 2006
777/787 Flight Crew Training Manual
Takeoff and Initial Climb
Copyright © The Boeing Company. See title page for details.
3.10 FCT 777/787 Preliminary (TM)
777-200 - 777-300ER
787-8
Retract the landing gear after a positive rate of climb is indicated on the altimeter.
Retract flaps in accordance with the technique described in this chapter.
7 - 9°
0 4 6.5
Time Seconds
14°
V R Liftoff V 2 + 15
35 ft.
TBD
October 31, 2006
777/787 Flight Crew Training Manual
Takeoff and Initial Climb
Copyright © The Boeing Company. See title page for details.
FCT 777/787 Preliminary (TM) 3.11
Typical Takeoff Tail Clearance
The following diagram and table show the effect of flap position on liftoff pitch
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787机组训练手册Flight Crew Training Manual 787(35)
