BendixKing KI 525A System KFC 225 - Manual (Page 15)

KFC 225 AUTOMATIC FLIGHT CONTROL SYSTEM
System Operation
9
Rev. 1
Sep/04
will not operate. If one switch fails or
is moved and held for 3 seconds, the
trim monitoring system will detect a
switch failure resulting in a PT
annunciation on the autopilot display
and the disabling of the electric trim
system. Use of manual electric trim
during autopilot operation will disen-
gage the autopilot. (Located on the
pilot’s control wheel.)
21. CONTROL WHEEL STEERING
(CWS) MODE BUTTON (not shown)
- When pressed and held, disen-
gages the pitch, roll, yaw, and pitch
trim clutches allowing the pilot to
maneuver the airplane by hand.
Pressing the CWS button will also
sync the automatic flight control sys-
tem PIT, ROL, ALT or VS com-
mands to the actual attitude, altitude
or vertical speed present at the time
the button is released. It is not rec-
ommended to use the CWS for alti-
tude changes greater than 400 ft.
ROL will maintain wings level if CWS
is released at less than 6° bank
angle. (Located on the left horn of
the pilot’s control wheel.)
22. GO AROUND (GA) MODE
BUTTON (not shown) – When
pressed will engage the flight direc-
tor in a pitch up attitude and wings
level (ROL mode). GA will disen-
gage the autopilot, and cancel all
armed modes including an armed
altitude preselect. Lateral modes
such as HDG or NAV ARM may
subsequently be added. The autopi-
lot may subsequently be engaged.
Modification to the commanded pitch
attitude such as through the UP/DN
button or CWS, etc. will cancel GA
and revert to pitch altitude hold.
(Located on the engine throttle).
23. OMNI BEARING SELECT
KNOB - Selects the desired course
to be tracked by the autopilot
(Located on the HSI.)
24. HEADING SELECT KNOB -
Positions the heading bug on the
compass card (Located on the HSI.)
25. TRIM FAIL ANNUNCIATOR
(not shown) - Illuminates whenever
the automated preflight self-test
detects a pitch trim fault or a continu-
ous monitoring system detects a
pitch trim fault in flight. (Located on
the instrument panel. The annuncia-
tor is red in color.) Refer to the
EMERGENCY PROCEDURES in
the airplane Flight Manual
Supplement for proper response to
a pitch trim fault.