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the active FCP mode pushbutton or by selecting another lateral mode.
AUTOMATIC FLIGHT CONTROL SYSTEM
For Training Purposes Only
May 03
4-21
P I LOT T R A I N I N G GU I D E
Roll Mode
ROLL is the basic lateral operating mode, and is automatically selected when no other
lateral mode is active and the flight director is on. A green ROLL annunciation
appears in the active lateral field of the FMA when roll mode is active.
Roll mode generates commands to maintain a reference bank angle. If the roll attitude
(bank angle) is more than 5 degrees from level when roll mode is selected, the FCC
generates commands to maintain the bank angle. If the roll attitude is less than 5
degrees, the FCC generates commands to maintain heading by rolling to zero bank
(wings level).
The pilot may adjust the roll reference to a desired roll angle by pushing the FD SYNC
button and manually setting a bank angle up to 30 degrees. If the pilot selects a bank
angle greater than 30 degrees, but less than 45 degrees, the FD will generate
commands to return to 30 degrees’ bank upon release on the FD SYNC button.
Roll mode is automatically cleared by selection of another lateral mode.
Roll mode is automatically selected if the data required to fly the
active lateral mode becomes invalid.
Roll Mode
Figure 4-16
NOTE
P604_04_040
7000
10000 1.1
10
10
MDA
A A
A
ROLL
LNV1
DR ALTS
ALTS
AP
2500M
M.454
280
240
220
250
260
4
4
2
2
1
1
29.92 IN
10
100
200
900
800
000
AUTOMATIC FLIGHT CONTROL SYSTEM
4-22 For Training Purposes Only
May 03
P I LOT T R A I N I N G GU I D E
Heading Select Mode
Pushing the HDG button on the FCP alternately selects and clears heading select
mode. A green HDG annunciation appears in the active lateral field of the FMA when
the mode is active.
Heading select mode generates commands to capture and maintain the selected
heading (heading bug). When heading mode is selected, the direction of turn will be
the shortest turn to the heading bug. The desired heading can be changed by turning
the HDG knob on the FCP. With heading mode active, the direction of turn will always
be in the direction the heading bug is moved. The heading bug may be synchronized to
the aircraft’s current heading by pressing the PUSH SYNC button in the center of the
heading knob.
Heading mode is automatically cleared by selection or capture of another lateral mode
or by pressing the HDG button again.
Heading Mode
Figure 4-17
6
E
12
15
3
N
33
MSG1
MSG2
FMS1
96
DTK 058
.3NM
YQB
VOR1
P604_04_041
7000
10000 1.1
10
10
MDA
A A
A
HDG
LNV1
DR ALTS
ALTS
AP
2500M
M.454
280
240
220
250
260
4
4
2
2
1
1
29.92 IN
10
100
200
900
800
000
AUTOMATIC FLIGHT CONTROL SYSTEM
For Training Purposes Only
May 03
4-23
P I LOT T R A I N I N G GU I D E
Half Bank Mode
Pushing the 1/2 BANK button on the FCP alternately selects and clears half bank
mode. When the mode is active, a white 1/2 BANK annunciation appears to the left of
the active/captured roll mode on the PFDs. Half bank mode may be selected
simultaneously with Heading (HDG) or FMS Navigation mode.
When active, half bank mode (1/2 BANK) reduces the roll limit to half the normal
value for the active lateral mode.
Half bank mode is cleared automatically by activation of a noncompatible lateral
mode, or can also be cleared by pressing the 1/2 BANK button again.
Automatic Half Bank
Half Bank is automatically selected if either flight director is selected and the airplane
climbs through a transition altitude of 31,600 feet MSL, or if the airplane is above this
altitude when the flight director is turned on. Half Bank mode automatically clears
when the airplane descends below 31,600 feet MSL. Manual operation of Half Bank
mode overrides the FCC automatic transitions to or from Half Bank mode.
Half Bank Mode
Figure 4-18
P604_04_042
7000
10000 1.1
10
10
MDA
1/2BNK A
A
HDG
LNV1
DR ALTS
ALTS
AP
2500M 4
4
2
2
1
1
M.454
280
240
220
250
260
29.92 IN
10
100
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本文链接地址：
CL_604-AUTOMATIC_FLIGHT_CONTROL_SYSTEM(10)
