MD-11 Flight Crew Operations Manual
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Automatic Flight -
Description and Operation
Auto.10.15
• The FMS V2 speed has been manually confirmed, and
• Either or both FDs are on and working.
The pitch command bar on the PFD is removed until V2 is manually confirmed
on the FMS TAKEOFF page.
After touchdown during landing roll, FD takeoff mode is inhibited until the AP
and ATS are disengaged. The AUTO FLIGHT switch will not engage the AP
below 100 feet if the FD is in takeoff. If autoflight is attempted below 100 feet,
the AP OFF red box flashes until the AP disconnect switch is pushed.
Prior to takeoff, the Vspeeds are entered on the MCDU and verified by the pilot
for display on the PFD. During takeoff roll through rotation, the FD commands
wings level and the FD pitch cues will be about 0 degrees below 80 knots, will rise
to about 6 degrees at 80 knots, and then rise to about 15 degrees at rotation speed.
If speed at engine out (EO) is below V2, the target speed will be V2. If speed at
EO is between V2 and V2 + 10, the target speed will be that speed. If the speed at
time of EO is more than V2 + 10, the target speed will be V2 + 10.
If not already engaged, the FD will engage automatically after liftoff and provide
pitch windshear guidance if windshear warning becomes active.
The AP takeoff and parallel rudder modes are engaged above 100 feet by pushing
the AUTO FLIGHT switch.
Lateral takeoff control will retain the FD heading reference if the aircraft is on
heading and wings level. If the aircraft is not on heading with wings level, a wings
level command will be initiated.
Selecting any other roll mode during takeoff will exit the AP roll takeoff and
parallel rudder modes without exiting pitch takeoff.
Pitch takeoff exit (if roll axis still in takeoff) sets the roll mode to heading hold at
the roll takeoff reference. AP pitch takeoff may be cancelled (above 400 feet) by
selecting any other pitch mode. AP pitch takeoff will be cancelled automatically
at altitude capture.
Parallel rudder operation is an engaged AP mode in which the FCC controls the
rudder to counter asymmetric thrust or to align the aircraft at 150 AGL during
autoland. This mode engages automatically when the AP is on during takeoff or
go-around, and during DUAL LAND, or SINGLE LAND. During this mode the
pilot can feel the rudder motion in the rudder pedals and the bank angle limiter on
the PFD indicates 10 degrees or less. This mode stops when another lateral mode
is selected (heading select, heading hold, or NAV) during takeoff or go-around, or
when the aircraft configuration is changed to clean.
October 02, 2006
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