Garmin GFC 600H Pilot's Manual page 29

c
ouPleD
The GFC 600H system supports flight in the pitch and/or roll axes. When coupling
a single axis to the flight director, the remaining axis operates in ATT. This state is
indicated on the GMC and optional PFD by showing 'ATT' in the corresponding mode
field. The cyclic beep trim switch will provide control of the function currently in the
mode field. When an axis is coupled to ALT/IAS/VS, the up/down cyclic beep trim
switch will directly control the pitch reference. When ATT is the active mode, the cyclic
beep trim provides direct control of the reference attitude. Some system operations
will require a flight director mode to be present. As an example, an approach cannot
be armed under ATT. Selection of the APR key with ATT present in the pitch or roll field
will automatically select the default FD mode for that axis to become the active mode
prior to arming a navigation mode.
F D
light irector
The maximum commanded pitch/roll attitudes and minimum airspeed values are
established during HFCS certification. Maximum commanded pitch and roll rates are
also limited. Reference the Rotorcraft Flight Manual Supplement for Flight Director
command limits in a specific rotorcraft.
190-02081-04 Rev. A
F
light
l
imitAtions
Garmin GFC 600H Pilot's Guide
HFCS
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