MD-11 Flight Crew Operations Manual
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Automatic Flight -
Controls and Displays
Auto.30.21
4. Flight Director - magenta
The Flight Director (FD) can be turned off and on with switches outboard of
the PFD. The FD comes on automatically for go-around or windshear.
Default condition is FDs on. During a TCAS RA, the FD can be removed by
pushing the AP disconnect switch once. The FD automatically reappears
when clear of traffic conflict.
FCP selected flight path angle is green line with a gap. Two short vertical
lines are selected TRK targets. This symbology provides no guidance
command.
Flight path vector is a small green circle with wings and tail at the current
direction of flight. The vector wings are always level. The flight path vector
is shown whenever Flight Path Angle (FPA) is selected from the FCP.
5. Glideslope Pointer and Scale
Glideslope deviation scale is in view after the ILS is tuned. The magenta
glideslope pointer is in view when valid glideslope data is received to indicate
glideslope position relative to the airplane. Pointer changes to amber and
flashes if the glideslope deviation exceeds 1 dot between 500 and 100 feet RA
while G/S displayed in FMA vertical mode window.
6. Radio Altitude
Displayed below 2,500 feet AGL. Box and digits are normally white but turn
amber for altitudes below the minimum altitude set on the ECP.
7. Localizer Pointer and Scale
Localizer deviation scale is in view after the ILS is tuned. The magenta
localizer pointer is in view when valid localizer data is received to indicate
localizer position relative to the airplane. Pointer changes to amber and
flashes if the localizer deviation exceeds 1/4 dot between 300 and 0 feet RA
while LOC or ALIGN displayed in FMA roll mode window.
8. Heading
Heading is MAG (dim white) but changes to TRU (cyan) at latitudes greater
than 73 degrees N or 60 degrees S.
9. Heading Bug
Bug is outline when preselected and filled when selected. If the HDG is off
scale, the bug is parked and the HDG is shown digitally at the edge of the
screen.
When the aircraft is on emergency power, frequency, bearing, and radial of
VOR1 is shown below the HDG scale on the Captain’s PFD (DEU1 data
only).
October 02, 2006
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