787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Automatic Flight -
System Description
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 4.20.7
TO/GA –
• On the ground, TO/GA annunciates by positioning either flight director
switch ON when both flight directors are OFF, or by pushing either
TO/GA switch with airspeed greater than 80 KTS. TO/GA roll guidance
becomes active at lift–off
• In flight, TO/GA is armed when flaps are out of up or glideslope is
captured. There is no flight mode annunciation for TO/GA armed. TO/GA
is activated in flight by pushing a TO/GA switch. The TO/GA roll mode
maintains the existing ground track
[Option – HUD low visibility takeoff]
HUD TO/GA (Low Visibility Takeoff)
• On takeoff, HUD provides lateral guidance for takeoff roll and rejected
takeoff using ILS or GLS signals. Selecting a HUD TAKEOFF departure
in the FMC and turning either flight director ON sets HUD TO/GA as the
engaged roll mode on the PFD and HUD
• HUD guidance becomes active and cue appears when the airplane
approaches the runway center line and airplane heading is within 45 deg of
runway heading
Note: The lateral flight director bar on the PFD also moves with the
guidance commands but is not certified for use during a low visibility
takeoff.
• When TO/GA mode is selected, the HUD symbology automatically
changes to full mode symbology and the HUD symbology control switch
is inhibited
ROLLOUT –
• ROLLOUT (armed) – Displayed below 1500 feet radio altitude and
engages below 2 feet
• ROLLOUT (engaged) – After touchdown, the AFDS uses rudder and
nosewheel steering to keep the airplane on the localizer centerline
Pitch Modes
The pitch modes are:
TO/GA –
On the ground, TO/GA annunciates by positioning either flight director switch
ON when both flight directors are OFF, or by pushing either TO/GA switch with
airspeed greater than 80 knots. The flight director PFD pitch bar and HUD
guidance cue indicates an initial pitch of 8º up.
February 15, 2010
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