System operating modes, Pitch and roll attitude hold (pit)modes, Vertical speed (vs)mode – BendixKing KI 525A System KFC 225 User Manual
Page 18: System operation 12

The
ROL
mode engages in wings
level Roll Attitude Hold mode.
To change ROL Attitude Hold Mode:
1. Press CWS and bank the air-
craft to the desired bank angle. If
the bank angle is less than 6°
when the CWS button is released,
the autopilot will hold wings level.
If the bank angle is greater then 6°
when the CWS is released, the
autopilot will hold the bank angle
up to the maximum allowed by the
autopilot for that aircraft.
Vertical Speed (VS) Mode
The Vertical Speed (
VS
) mode
allows vertical speed climbs and
descents. The
VS
button engages
vertical speed mode.
To operate in the
VS
mode (with
autopilot currently disengaged):
1.
VS
button - Press. Note
ROL
,
VS
and current vertical speed is
displayed. Pressing the
AP
button
will engage the autopilot in
ROL
and
VS
modes.
2.
UP
or
DN
button - Select
desired climb or descent rate.
Each button stroke will increment
the vertical speed commanded up
or down by 100 ft/min per button
press, or at the rate of approxi-
mately 300 ft/min per second if
held continuously.
System Operation
12
KFC 225 AUTOMATIC FLIGHT CONTROL SYSTEM
Rev. 0
Apr/99
AP
VS
ARM
G
KFC 225
HDG
NAV
APR
REV
ALT
FD
DN
UP
YD
P R
ALT SEL
AP
VS
ARM
G
KFC 225
HDG
NAV
APR
REV
ALT
FD
DN
UP
YD
P R
ALT SEL
Pitch and Roll Attitude Hold
(PIT) Modes
The Pitch Attitude Hold (
PIT
)
mode allows constant attitude climbs
and descents. The
AP
or
FD
button
engages
PIT
mode.
To operate in the
PIT
mode
(with autopilot currently disengaged):
1.
FD
button - Press. Note
ROL
and
PIT
are displayed. Pressing
the
AP
button will engage the
autopilot in
ROL
and
PIT
modes.
2.
UP
or
DN
button - Select
desired climb or descent attitude.
Each button stroke will increment
the pitch attitude by 0.5°. Pushing
and holding the
UP
or
DN
button
will cause the aircraft to pitch at
0.8° per second. Releasing the
button will sync the attitude to the
present pitch attitude.
To initiate a climb or descent from
Altitude Hold (
ALT
) mode:
1.
ALT
button - Press. Note
ALT
changes to
PIT
referencing the
present pitch attitude.
2.
UP
or
DN
button - Select
desired climb or descent attitude.
Each button stroke will increment
the pitch attitude by 0.5°.
System Operating Modes