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LOC/GS Captured
AUTOMATIC FLIGHT CONTROL SYSTEM
4-30 For Training Purposes Only
Sept 04
P I LOT T R A I N I N G GU I D E
FMS-Based Approach
Pushing the APPR button alternately selects and clears approach mode. The FMSbased
Approach mode functions the same as FMS Navigation (LNV) mode.
Additionally, glide path (GP) mode is armed for capture to track the desired glide path
from the FMS if VNAV is selected.
Refer to the Collins FMS-6000 Flight Management System Pilot’s Guide for
additional information on FMS-based approaches.
AUTOMATIC FLIGHT CONTROL SYSTEM
For Training Purposes Only
Sept 04
4-31
P I LOT T R A I N I N G GU I D E
FMS Approach Mode
Figure 4-24
P604_04_048
1300
1300
1300
1300
1300
1300
1.0
1.0
1.0
12
12
15
15
S
S
E
E
6
6
3
10
10
10
10
20
A
A
A
A
A
A
HDG
LNV1
LNV1
LNV1
LNV1
LNV1
GP
GP
GP
DR
DR
DR
VALT
VALT
VGP
A
A
A
AP
AP
AP
FMS1
1
DTK 104
.6NM
ALWAR
FMS1
0
DTK 104
.5NM
ALWAR
FMS1
1
DTK 104
.8NM
ULNB
GPS TERM
GPS TERM
GPS APPR
2500M
2500M
2500M
4
4
4
4
4
4
2
2
2
2
2
2
1
1
1
1
1
1
M.456
M.456
M.456
200
200
160
160
160
120
T
T
T
2
2
2
R
140
140
100
170
170
135
180
180
140
1.0
1.0
0.5
2
2
2
100
100
100
200
200
200
900
900
900
800
800
800
000
000
000
29.92 IN
29.92 IN
29.92 IN
10
20
10
1800
1850
1800
FT
FT
FT
12
15
S
E
6
LNV Armed
GP Armed
LNV Captured
GP Armed
LNV Captured
VGP Captured
AUTOMATIC FLIGHT CONTROL SYSTEM
4-32 For Training Purposes Only
Sept 04
P I LOT T R A I N I N G GU I D E
Localizer Back Course Mode
Back Course mode (B/C) generates commands to track a localizer signal using
reverse-sensing.
Back Course mode is armed by pressing the B/C button on the FCP. Back Course
mode localizer capture is the same as NAV mode; B/C1 (or B/C2) shows in white in
the armed lateral mode field on both PFDs. When armed, the FCC operates in a
heading select submode until capture of the localizer occurs.
If the Back Course approach is selected from the FMS, the localizer frequency is tuned
automatically and the course display is set to the appropriate inbound course. With
Back Course mode armed, the active navigation source will automatically change
from FMS to LOC (automatic NAV to NAV transfer) at localizer capture.
After capture, the FCC generates commands to track the reciprocal of the selected
course. The front course track must be set in order to have valid B/C guidance.
Capture of the Back Course is indicated by a green B/C1 or B/C2 in the active field of
the FMA. Glideslope is inhibited when B/C mode is active.
Back Course mode is cleared by selecting another lateral mode, or by changing the
active side navigation source or frequency.
Back Course Mode
Figure 4-25
2100
2000 1.0
10
10
MSG1
MSG2
A
A
B/C1
A
DR ALTS
A
AP
LOC1
CRS 104
– – – –NM
VOR1
ADF2
2500M
W
30
33
N
3
24
21
S
4
4
2
2
1
1
M.456
200
160 T
2
140
170
180
1.0
2
100
200
900
800
000
29.92 IN
P604_04_046
1900 FT
AUTOMATIC FLIGHT CONTROL SYSTEM
For Training Purposes Only
Sept 04
4-33
P I LOT T R A I N I N G GU I D E
Lateral Takeoff
On the ground, pushing either TOGA (Takeoff/Go-Around) button mounted on the
thrust levers selects Takeoff mode and clears all other lateral modes. Lateral and
vertical takeoff mode selections are coincident. When takeoff mode is active, a green
TO appears in the active lateral field of the FMA. During takeoff mode, the flight
　
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