BendixKing KFC 500 User Manual

Page 10

Hold and Roll Attitude/Heading Hold
automatically engage unless other
tracking modes are selected. Pitch
Attitude Hold and Roll
Attitude/Heading Hold are annunci-
ated on the EADI as PIT and ROL,
respectively.

Pitch Attitude Hold
Roll Attitude/Heading Hold

In the absence of any other

selected Flight Director Modes, the
Flight Director will provide com-
mands to maintain current pitch atti-
tude and establish a level roll atti-
tude. When roll attitude approaches
six degrees or less bank angle, the
flight director will provide commands
to maintain constant heading.

Target roll and pitch attitudes

may be selected by several methods.
Adjusting the helicopter’s attitude
manually may be accomplished by
pressing the Force Trim Release
(FTR) Switch to the first detent while
moving the cyclic (and the helicopter)
to the desired attitude. Upon release
of the FTR switch, the Flight Director
will provide commands to maintain
the target Pitch and Roll attitude.
Alternatively, Attitude Hold com-
mands may be modified by moving
the Cyclic mounted Beep Trim(CBT)
switch in the appropriate directions.

If a target roll attitude of six

degrees or less is selected, the Flight
Director will provide commands to
maintain the helicopter's current
heading. Heading information from

the KSG 305 Compass System's
Directional Gyro provides heading
informantion to the Flight
Director/Autopilot.

Selecting any horizontal or verti-

cal tracking mode cancels Roll
Attitude Hold or Pitch Attitude Hold,
respectively. Either mode may be
used in conjunction with any Arm
mode to provide flight guidance for
course or altitude intercepts.

Lateral Command Control

Activated by the Cyclic Beep

Trim (CBT) switch when the Flight
Director or Autopilot is on, Lateral
Command Control modifies the
AFCS’s reference attitude during
operations in Roll Attitude Hold.
Moving the four-way switch either
right or left cancels any selected
flight director horizontal mode and
engages Roll Attitude Hold.
Operating Lateral Command Control
does not affect Arm operations in
Nav or Approach modes, nor does it
affect flight director vertical modes,
with the exception of Glideslope,
which it cancels along with
Approach. When Lateral Command
Control is used, the aircraft will be
commanded to follow the pilot’s input
to roll left or right with a constant roll
rate until the beep trim switch is
released.

Upon release of the CBT switch,

the flight director will command the
aircraft to maintain the existing roll

☛

FTR

CBT

Cyclic Grip
Switches