BendixKing KFC 500 - Manual (Page 12)

Normal Operation
14 February 15, 1996 006-08769-0000
Normal Operation
15 006-08769-0000 February 15, 1996
Activating Discrete or Continuous Lateral Command has the following effect
upon the command reference for autopilot operation:
SCAS/Autopilot Disconnect
The cyclic mounted AFCS DISC
switch when pushed disconnects AP
and/or SCAS mode if engaged. This
switch provides the pilot or copilot a
quick and easy means to disconnect
either of these two control coupled
modes.
Force Trim Release (FTR)
The FTR switch is a double detent
switch. Actuation to the first detent
allows the pitch and roll clutches to
release for free cyclic movement.
Depressing through the second
detent releases the yaw clutch in
addition to the pitch and roll, allowing
free cyclic and anti-torque pedal
movement.Pushing and releasing
the FTR switch when the autopilot
mode is on (attitude hold), causes
the system to synchronize its refer-
ence attitude with the present heli-
copter attitude.
When the FTR switch is pressed, the
AFCS will revert to SCAS (when AP
is engaged) and the trim servo mag-
netic clutches release eliminating the
artificial feel system and allowing
the pilot or copilot free movement of
the cyclic. When the switch is
released the AP and trim clutch re-
engages. The Force Trim System
must be on for the AP mode to oper-
ate.
Yaw Force Trim Release
A collective mounted Yaw Force
Trim Release is provided. If the
Force Trim System is on, depressing
this switch releases the yaw clutch
(AFCS yaw axis will revert to SCAS
if engaged), allowing free anti-torque
pedal movement. The AFCS will
annunciate SCAS under this condi-
tion until the yaw force trim release is
released.
Pitch Command Control
Using the same cyclic beep switch
as mentioned in the previous para-
graph, the autopilot’s reference pitch
attitude can be modified by moving
the pitch command switch fore or aft.
Moving the switch forward adjusts
the helicopter’s pitch attitude down-
ward, while moving it aft adjusts the
attitude upward.
Activating Discrete or Continuous Pitch Command has the following effect
upon the command reference for autopilot operation:
Autopilot Lateral Command Values
Discrete Command System Response
Roll Attitude First Click=6°, Subsequent=1° per click
Continuous Command
Roll Attitude Constant Roll Rate
Autopilot Pitch Command Values
Discrete Command System Response
Pitch Attitude 0.5° per click
Continuous Command
Pitch Attitude Maintains constant. acceleration profile
until release
CBT
AFCS DISC
FTR
YAW
FORCE
TRIM
RELEASE