Boeing 787-8 - Page 520

787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Automatic Flight -
System Description
Copyright © The Boeing Company. See title page for details.
4.20.4 D615Z003-TBC
The steering indications are also displayed when the related flight director switch
is OFF and a TO/GA switch is pushed, if airspeed is greater than 80 knots and the
flaps are not retracted. In this case, the flight director display can be removed by
cycling the respective flight director switch on and then off.
[Option – Split cue]
A flight director mode failure, in either pitch or roll, causes the respective steering
bar to disappear. The stall and overspeed protection functions also cause the pitch
flight director bar to disappear.
Autopilot Flight Director System Schematic
AFDS Status Annunciation
The following AFDS status annunciations are displayed just above the PFD and
HUD attitude display:
• FLT DIR (the flight director is ON and the autopilots are not engaged)
• A/P (the autopilots are engaged)
• LAND 3 (autopilot system level of redundancy is such that a single fault
cannot prevent the autopilot system from making an automatic landing
(fail operational))
• LAND 2 (level of redundancy is such that a single fault cannot cause a
significant deviation from the flight path (fail passive))
• NO AUTOLAND (the AFDS is unable to make an automatic landing)
Autopilot
FMCs
Primary
F/D
ON
A/T ARM
LR
A/P
A/P
F/D
ON
OFF
CLB/CON
LNAV
VNAV
AUTO
10 30
BANK
LIMIT
DOWN
UP
FLCH HOLD HOLDVS/FPA
IAS MACH
ALTITUDE
XFR
A/T
LOC/FAC
AUTO 1000
APP
A/P DISENGAGE
OFF
OFF
SEL
HDG TRK
XFR
V/S FPA
XFR
Flight
Computers
Actuator
Control
Electronics
Surfaces
Control
Flight
February 15, 2010