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P604_04_044
1900 FT
VOR1
AUTOMATIC FLIGHT CONTROL SYSTEM
For Training Purposes Only
Sept 04
4-27
P I LOT T R A I N I N G GU I D E
FMS Navigation Mode
In FMS navigation mode, the flight director uses lateral steering commands from the
active Flight Management Computer (FMC) to capture and track the desired track to
the ‘‘TO” waypoint.
When the NAV button is pressed and the active navigation source is FMS1 or FMS2,
the FMS navigation mode arms and a white LNV1 (or LNV2) annunciation is
displayed in the armed lateral mode field on both PFDs. When the FMC capture
criteria are met, the armed annunciation is removed and a green LNV1 (or LNV2)
annunciation is displayed in the active lateral mode field on both PFDs.
When captured, FMS navigation mode is cleared automatically by selection of another
lateral mode, by changing the active NAV source, or by loss of FMS steering validity.
FMS navigation mode can also be cleared by pressing the NAV button again.
FMS Navigation Mode
Figure 4-22
7000
10000
6
E
12
15
3
N
33
10
10
MSG1
MSG2
A
A
LNV1
A
DR ALTS
A
AP
FMS1
96
DTK 058
.3NM
YQB
ADF2
2500M
M.456
280
240
220
250
260
1.0
4
4
2
2
1
1
1.0
29.92 IN
P604_04_045
VOR1
Navigation
Source
10
100
200
900
800
000
AUTOMATIC FLIGHT CONTROL SYSTEM
4-28 For Training Purposes Only
Sept 04
P I LOT T R A I N I N G GU I D E
Approach Mode
Approach mode is used to fly a Localizer-based (ILS) or FMS-based nonprecision
approach. During approach mode, the flight directors operate in dual independent
mode.
Approach mode is selected by pressing the APPR button on the FCP. The displayed
navigation source will determine which approach submode will be in operation.
ILS-Based Approach
Pushing the APPR button alternately selects and clears approach mode. Approach
mode localizer capture functions the same as Localizer Navigation (NAV) mode.
Additionally, glideslope (GS) mode is armed for capture.
Automatic NAV-to-NAV Transfer
When a localizer-based approach is selected from the FMS and the aircraft is within
30 nm from the airport, the localizer frequency is automatically tuned and the course
display is set to the appropriate inbound course. The localizer deviation scale and
pointer are superimposed in cyan on the PFD HSI, and a cyan LOC1 (or LOC2)
navigation source is displayed beside the active navigation source (FMS 1 or FMS 2).
With approach mode armed (APPR button selected on FCP) during localizer intercept,
the active navigation source will automatically change from FMS to LOC (automatic
NAV to NAV transfer) at localizer capture. If required, Approach mode can then be
canceled and Navigation mode selected by pressing the NAV button on the FCP.
AUTOMATIC FLIGHT CONTROL SYSTEM
For Training Purposes Only
Sept 04
4-29
P I LOT T R A I N I N G GU I D E
ILS Approach Mode
Figure 4-23
P604_04_047
7000
2000 1.0
3
6
E
N
33
10
10
A
A
HDG
LOC1 GS
DR ALTS
A
AP
FMS1
8
DTK 059
.0NM
BIRPO
GPS TERM
LOC1
2500M 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
1900 FT
7000
2000 1.0
6
E
12
3
N
10
10
A
A
LOC1
LOC1 GS
DR ALTS
A
AP
LOC1
7
CRS 059
.9NM
IUL
2500M 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
1900 FT
7000
2000 1.0
6
E
12
3
N
10
10
A
A
LOC1
LOC1 GS
DR GS
A
AP
LOC1
6
CRS 059
.1NM
IUL
2500M 4
4
2
2
1
1
M.456
200
160 T
2
140
170
180
0.1
2
100
200
900
800
000
29.92 IN
1850 FT
NAV to NAV
Transfer
LOC Armed
GS Armed
LOC Captured
GS Armed
　
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本文鏈接地址：CL_604-AUTOMATIC_FLIGHT_CONTROL_SYSTEM(12)