787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Automatic Flight -
System Description
Copyright © The Boeing Company. See title page for details.
4.20.6 D615Z003-TBC
• On go-around, LNAV engages at 50 feet radio altitude with flight director
only or 200 feet radio altitude with the autopilot engaged.
• LNAV is disengaged by engaging any other roll mode or by disengaging
the autopilot and turning both flight directors off.
HDG –
• HDG SEL (engaged) – The airplane is turning to, or is on the heading
selected in the MCP heading/track window
• HDG HOLD (engaged) – The AFDS holds the present heading. If turning,
the AFDS holds the heading reached after rolling wings level
TRK –
• TRK SEL (engaged) – The airplane is turning to, or is on the track selected
in the MCP heading/track window
• TRK HOLD (engaged) – The AFDS holds the present track. If turning, the
AFDS holds the track reached after rolling wings level
[Option – Bank angle hold]
ATT – (engaged) – When the autopilot is first engaged or the flight director is first
turned on in flight, the AFDS holds a bank angle between 5º and 30º and will not
roll to wings level. If the bank angle is less than 5º, the AFDS returns to wings
level (HDG HOLD or TRK HOLD). If the bank angle is greater than 30º, the
AFDS returns to 30º of bank.
LOC –
• LOC (armed) – The AFDS captures the localizer when within range and
within 120º of the localizer track
• LOC (engaged) – The AFDS follows the selected localizer course
FAC –
• FAC (armed) – The AFDS captures the IAN final approach course
• FAC (engaged) – The AFDS tracks the IAN final approach course along
the inbound bearing
B/CRS –
• B/CRS (armed) – The AFDS captures the localizer final approach back
course
• B/CRS (engaged) – The AFDS tracks the localizer final approach course
along the inbound back course bearing
February 15, 2010
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