787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Automatic Flight -
System Description
Copyright © The Boeing Company. See title page for details.
4.20.2 D615Z003-TBC
Other modes arm or engage with a single push. These modes are:
All modes except APP can be disengaged by selecting another mode. All modes
can be disengaged by disconnecting the autopilot and turning both flight directors
off. After localizer and glideslope capture, the localizer and glideslope modes can
only be disengaged by disconnecting the autopilot and turning both flight directors
off, engaging the go–around mode, or if above 1,500 feet radio altitude, by
reselecting APP (roll and pitch revert to default modes). The VNAV, LNAV, LOC
and APP modes can be disarmed by pushing the mode switch a second time.
(except when LNAV is automatically armed on go-around)
Desired target values can be selected on the MCP for:
All of these parameters except vertical speed and flight path angle can be
preselected prior to autopilot and/or flight director engagement.
Autopilot Engagement
The autopilot is engaged by pushing either of the two MCP autopilot engage
switches.
Autopilot Disengagement
Normal autopilot disengagement is through either control wheel autopilot
disconnect switch. The autopilots can also be disengaged by:
• the MCP autopilot disengage bar, or
• overriding with the control column, control wheel, or rudder pedals (pedals
only disengage the autopilots with LAND 2 or LAND 3 annunciated)
When an override force sufficient to move the control column, control wheel, or
rudder pedals (LAND 2 or LAND 3 annunciated) is applied, the fly-by-wire flight
control system detects a difference between the flight deck controls and its own
estimate of the expected positions, and force a disconnect of the autopilot. After
the autopilot is disconnected, the control system transitions the control surface
commands from those of the autopilot to those of the flight crew.
• flight level change (FLCH SPD)
• heading hold (HDG HOLD)
• track hold (TRK HOLD)
• heading select (HDG SEL)
• track select (TRK SEL)
• vertical speed (V/S)
• flight path angle (FPA)
• altitude hold (ALT)
• lateral navigation (LNAV)
• vertical navigation (VNAV)
• localizer / final approach course
(LOC/FAC)
• approach (APP)
• airspeed
• Mach
• heading
• track
• vertical speed
• flight path angle
• altitude
February 15, 2010
To Next Page
Loading...
