King Air C90GTi, Pilot Training Manual

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KING AIR C90GTi/C90GTx PILOT TRAINING MANUAL
SYNC Button
The SYNC button is located on the outboard
horn of each control wheel. It is used to syn-
chronize the PTCH, FLC, VS, ALT and ROLL
modes of the flight director to the current pa-
rameters if the autopilot is not engaged (Fig-
ure 16-74). Inputs known as Control Wheel
Steering (CWS) or Touch Control Steering
(TCS) features are not installed on this system.
Figure 16-74. Pilot’s PFD with SYNC
Electric Pitch Trim Switches
The electric pitch trim switch is comprised of
two segments. The trim switch is located on the
outboard horn of each control wheel. The trim
switch applies electric pitch trim commands.
Both segments of the switch must be actuated
to operate the electric pitch trim. The seg-
mented pitch trim switch reduces the potential
of trim runaway or inadvertent activation.
When moved in either direction, the electric
pitch trim switches will disconnect the autopi-
lot while leaving the yaw damper engaged.
See the Flight Controls section of this PTM for
further discussion of electric pitch trim and its
annunciations.
GA Button
The GA button is located on the outboard
side, in the center, of the left power lever (Fig-
ure 16-75). The G/A button selects the go-
around (GA) mode of the flight director.
Selecting GA mode will disengage the autopi-
lot, but not yaw damper and clear all other
flight director modes. The flight director will
display approxi7 degree pitch up atti-
tude. Constant reference mode will be selected
and heading will be held if bank angle is less
than 5 degrees (Figure 16-76). The heading
being held is independent of the heading bug.
This mode will not follow any lateral or verti-
cal commands and will not capture the prese-
lected altitude. During go-around mode, the
flight directors are independent and the fail-
ure of one will not affect the other. This allows
for redundancy during a critical flight maneu-
ver. The independent flight director capability
also occurs during a full ILS and provides the
same redundancy.
Figure 16-75. Go-Around Button
Collins
10
10
20
HDG PTCH
ALTS
14
000
6
60
540
20
400
600
700
1
2
4
4
2
1
30.16IN
251
W
24
<
140
80
60
6935
TERM
ACC -.02
T
0
FMS
SYNC
V
2
V
R
V
1
110
93
93
16-40
FOR TRAINING PURPOSES ONLY
16
A
VIONICS