Flight Director System Modes
of
Operation
Heading
(HDG)
Altitude
Hold
(ALT)
Flight Director
(FD)
FD/AP
-
Vertical Trim
(Pitch Attitude/
Altitude)
-Yaw Dampei
Engagel
Disengage
Navigate (NAV) REV LOC (BC) Approach (APPR)
(VORIRNAV) (ILS. VOR
or
RNAV)
‘Annunciator
Light
Flight Director Guidance
and Command to Autopilot
Basic Attitude Reference Mode
Activated with “power on” but with no
modes selected. The Flight Command
indicator and Pictorial NAV indicator will
display existing attitude and heading.
The Command V-bar is retracted out of
view until a Flight Director/Autopilot
mode has been selected.
Flight Director (FD) Command V-bar will call for wings level.
The pitch attitude of the aircraft will
remain the same as at the time
of
mode
selection.
Select desired heading on PNI, then select
the HDG mode and the system will com-
mand the necessary bank to turn to and
maintain the selected heading.
Set desired course on PNI and select
NAV mode. The system’s all-angle NAV
Course Capture feature gives the pilot
complete freedom to select any intercept
angle in response to ATC vectors, using
HDG mode. The NAV mode
will
be
“armed,” and at the capture point HDG
will automatically disconnect and the
sys-
tem will “couple” and command the
necessary bank to capture and track a
selected VOR or RNAV course without
overshooting.
Heading (HDG)
NAV (VOR/RNAV)
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