P I L O T T R A I N I N G G U I D E
AUTOMATIC FLIGHT CONTROL SYSTEM
2-16
For Training Purposes Only
Sept 04
Heading Select (HDG) Mode
The heading select mode is activated via the HDG switch on the guidance panel.
If the heading bug is turned through more than 180° but less than 360° (airborne), the
FGC will follow the bug all the way around to the target and not turn in the shortest
arc. The FGC provides guidance to the selected target using the shortest arc when on
the ground. The on-ground logic will prevent the airplane from turning in the wrong
direction following takeoff, due to maneuvering the airplane may have done on the
ground.
Bank Mode
While in BANK mode, the roll rate commanded by the heading or VOR modes is
limited to 4°/sec. If the roll angle is less than or equal to 6° when ascending through an
altitude of 35,050 feet, the FGC automatically transitions to the low bank limit of 17°.
If the roll angle is greater than 6°, an automatic bank limit transition will not occur
until the roll angle is reduced to less than or equal to 6°.
When descending through 34,950 feet, the bank limit shall revert to the high bank
limit of 27°, if the roll angle is less than or equal to 6°. If the roll angle is greater than
6°, high bank limit reversion will not occur until the roll angle is reduced to less than
or equal to 6°.
SPD
MAN
FMS
CRS 1
CRS 2
PUSH DCT
PUSH DCT
ALT
HDG
DN
UP
P
I
T
C
H
Honeywell
FD
FD
AP
CPL
YD
FLC
NAV
BANK
HDG
VNAV
ALT
APR
VS
BC
PUSH CHG
PUSH SYNC
HDG
PUSH SYNC
GX_02_015
N
33
30
6
3
N
33
3
HDG Knob:
Turn to set the heading
bug on the HSI.
HDG Switch:
When selected, activates
heading mode.
PUSH SYNC:
Used to synchronize heading
bug to present heading.
20
20
10
10
10
10
20
20
20
HDG
VOR
29.92
IN
VS
AP2
200
300
00
9500
10500
220
200
190
180
170
160
150
185
6
4
100
00
80
20
