BendixKing KFC 500 - Manual (Page 18)

Force Trim Release (FTR)
When the Flight Director is active,
and coupled to the autopilot, the
Force Trim Release switch (FTR)
allows the crew to synchronize flight
director commands in pitch and roll
to the actual helicopter position.
When the selected mode for flight
director is pitch attitude hold, altitude
hold, airspeed hold, vertical speed
hold, roll level/heading hold, or roll
attitude hold, pushing 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. If
the AFCS is in APR mode and GS
track, pressing the FTR will have no
effect. If the AFCS has reverted to
overspeed protection mode, the FTR
switch is pushed and held, and the
pilot manually reduces airspeed to a
value below VNE, upon FTR release
the system will revert to the previ-
ously engaged pitch mode. Pressing
the FTR switch will have no effect on
ALT ARM, ALT capture, Go Around,
Autolevel, HDG select, NAV or APR
modes including GS. Upon release
of the FTR switch, the flight director
will provide commands to return to or
maintain the steering required for
these modes, while FTR is held
pressed the commands displayed
will be synchronized to the heli-
copter’s reference.
Flight Director Off
When the Flight Director Off (FD
OFF) switch on the cyclic is momen-
tarily depressed, the flight director
deactivates and the system reverts
to AP roll level attitude or heading
hold and pitch attitude hold if the
autopilot was previously engaged.
Subsequent activation of the flight
director modes may be accom-
plished by depressing the appropri-
ate Mode Select Panel push buttons
or by arming altitude select or
engaging vertical speed hold from
the Altitude/Vertical Speed Indicator
when primary system is selected.
Normal Operation
27 006-18081-0000 March 27, 1998
Normal Operation
26 June 15, 1999 006-18081-0000
FTR
Go Around
Pressing the GO AROUND push
button on the collective switch box
activates the Go Around mode in
which the flight director commands a
750 feet per minute climb and a roll
level attitude. Any horizontal tracking
mode may be subsequently re-
engaged without cancelling the Go
Around mode. Go Around mode can
only be canceled by selecting
another vertical mode (i.e. ALT, IAS
or VS).
FD OFF
GO
AROUND