BendixKing KFC 500 - Manual (Page 19)

Normal Operation Normal Operation
28 29 March 27, 1998 006-18081-0000 006-18081-0000 June 15, 1999
Heading Select (HDG)
Depressing the HDG push-button on
the mode select panel activates
Heading Select mode. This mode
will provide flight director commands
to track the heading bug on the
EHSI. The annunciator above the
switch on the mode select panel illu-
minates and “HDG” is displayed, in
green, on the EADI when the head-
ing select mode is activated.
Activating heading select cancels
any other lateral tracking mode. If
the heading select mode is active,
depressing the HDG push-button will
deactivate the mode and revert the
flight director back to the default
mode of roll level and heading hold.
Upon manual deactivation, the
annunciator lamp above the HDG
push-button and the green HDG
annunciation on the EADI will flash
for five seconds. This flash
sequence will terminate upon reacti-
vation of HDG or another lateral
mode. Continuous flashing of the
annunciator lamp above the push-
button and the flashing of and
changing color from green to yellow
of the HDG annunciation on the
EADI indicates loss of a sensor
required to hold the selected head-
ing (e.g. invalid magnetic heading,
invalid selected heading from EHSI).
The annunciations will continue
flashing until the HDG push-button is
activated (pilot acknowledgment of
mode loss) or another lateral mode
is selected.
Bank Angle Limit (BL)
The Bank Angle Limit mode allows
the maximum commanded bank
angle to be selected by the pilot. The
default value, 20°, is obtained at
power-up. The pilot may select 15°,
10°, 25° and then 20° again by
pressing the BL button until the
desired maximum bank is achieved.
The selected maximum bank angle
is annunciated on the EADI as BL15,
BL10, or BL25. The default value of
20° is not annunciated. In the
approach phases of flight, bank
angle limiting is disabled to provide
optimized approach guidance by the
flight director. All approach captures
are made with a maximum bank
angle of 20°. If lesser bank angles
are desired, the pilot may use the
heading select mode (move the
heading bug slowly) to capture the
localizer and then depress the APR
push-button to activate Approach
mode when tracking inbound on the
appropriate course.
When the flight director is coupled to
a long range navigation sensor like a
navigation management system
(NMS), GPS, etc. (i.e. GNS-X, KLN
90) that has a composite steering
output, the long range navigation
sensor has complete control of bank
Autopilot/Flight Director Mode Annunciation
AP HDG IAS NAV ALT
120 KT
20 20
BL25 GS
FD
1. Bank Angle Limit
2.Autopilot Engaged Annunciator
3. Armed Lateral Mode
4. Active Lateral Mode 5. Command Reference Value
6. Active Vertical Mode
7. Armed Vertical Mode
8. Flight Director Flag
KMS 540 Flight Director Mode Selection
HDG
☛
BL
☛
1
3 2 4 5 6 7
7
8