BendixKing KFC 500 User Manual

Page 12

Vertical Command has the effect
upon command values in flight direc-
tor operations shown in the preced-
ing table.

Force Trim Release (FTR)

When the Flight Director is

active, the Force Trim Release
switch allows the crew to synchro-
nize flight director commands in pitch
and roll to the actual helicopter posi-
tion. When the selected mode for
flight director is pitch attitude hold,
altitude hold, airspeed hold, roll level
or roll attitude hold, FTR will cause a
new flight director reference to be
established upon release of the
switch. All commands will then be
directed to hold this new reference.
When the autopilot is in Attitude Hold
mode with no flight director, the
AFCS synchronizes attitude with the
present helicopter attitude when
released.

When the FTR switch is

depressed, the trim servo magnetic
brakes release, eliminating the artifi-
cial feel system, allowing the pilot
free movement of the cyclic. When
the switch is released the trim brake
re-engages. The FTR switch is dou-
ble detent. Actuation to the first
detent allows the pitch and roll
brakes to release for free cyclic
movement. Depressing through the
second detent releases the yaw
brake in addition to the pitch and roll,
allowing free cyclic and pedal move-

ment. The Force Trim System must
be “ON” for the AFCS to operate.

Navigation Standby

When the Navigation Standby

Switch on the cyclic is momentarily
depressed, the flight director deacti-
vates and the flight computer com-
mands attitude retention.
Subsequent activation of the flight
director modes may be accom-
plished by depressing the appropri-
ate Mode Select Panel pushbuttons
or by arming an altitude on the
Altitude/Vertical Speed Indicator.

Go-Around

Pressing the Go-Around

Pushbutton on the collective switch
box activates the Go-Around mode in
which the flight director commands a
750 feet per minute climb in a roll-
level attitude. Any horizontal tracking
mode may be subsequently reen-
gaged without cancelling the Go-
Around climb.

NAV
Standby

Go-
Around

FTR