BendixKing KI 525A System KFC 225 - Manual (Page 11)

KFC 225 AUTOMATIC FLIGHT CONTROL SYSTEM
System Operation
5
Rev. 0
Apr/99
AP
VS ARM
G
KFC 225
HDG NAV APR REV ALT FD DN
UP
YD
P R
ALT SEL
1
2 4 10
Full KFC 225 Three-Axis with Altitude Preselect Display
11
13 12
5 6 7 8 9
16 17 15 14 18
3
KFC 225 System Operation
Controls and Displays Operation
1. PITCH AXIS, ( P ) ANNUNCIA-
TOR - When illuminated, indicates
failure of the pitch axis and will lead
to disengagement of the autopilot.
(Will also illuminate during short term
vertical accelerations in excess of
+1.6g or less than +0.4g which may
not cause autopilot disengagement.)
2. ROLL AXIS ( R ) ANNUNCIA-
TOR - When illuminated, indicates
failure of the roll axis and will disen-
gage the autopilot.
3. AUTOPILOT ENGAGE/DISEN-
GAGE ( AP ) BUTTON - When
pressed, engages the flight director,
autopilot and yaw damper (if
installed). If the flight director is not
already engaged, the system will
engage into the basic wings level
(ROL) and pitch (PIT) attitude hold
modes. The pitch attitude main-
tained will be the pitch attitude pre-
sent at the moment of AP button
press. When pressed again, will dis-
engage the autopilot.
4. FLIGHT DIRECTOR ( FD )
MODE SELECTOR BUTTON –
When pressed will engage the flight
director into the basic roll (ROL)
mode which functions as a wing lev-
eler, and into the pitch attitude (PIT)
hold mode. The pitch attitude main-
tained will be the pitch attitude pre-
sent at the moment of FD button
press. When pressed again (and the
autopilot is not engaged) will disen-
gage the flight director.
5. HEADING ( HDG ) MODE
SELECTOR BUTTON - When
pressed, will engage the Heading
mode, which commands the airplane
to turn to and maintain the heading
selected by the heading bug on the
HSI. A new heading may be
selected at any time and will result in
the airplane turning to the new head-
ing. Button can also be used to tog-
gle between HDG and ROL modes.
This button will engage the flight
director.