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Sept 04
Tracking performance for glideslope mode is within ± 1 dot from 700 to 100 feet
(radio altimeter).
ASEL is inhibited during glideslope capture.
During a CAT 2 approach, EFIS will monitor for excessive deviation from the beam
and will provide appropriate annunciation. The outputs provided by AFCS (used by
EFIS) in the determination of CAT 2 status are glideslope arm or capture and dual
couple status. A valid CAT 2 status is indicated on the PFD. A CAT 2 window also
appears to display deviation from the beam. The fully coupled (dual arrow) ILS
approach becomes active when the aircraft is below 1200 feet AGL.
VOR Approach (VAPP) Mode
The APR button must be selected in order to get VAPP mode. With flaps other than
zero, the FGC sets bank limits and rate limits to ensure proper gain control and
performance from VOR capture through the approach profile, to landing. FD roll
commands are ± 30° during VOR approach capture and roll rate commands 7°/sec.
When track phase is active, FD commands are ± 14° and roll rate commands 4°/sec.
For Training Purposes Only
Sept 04
2-37
P I LOT T R A I N I N G GU I D E
AUTOMATIC FLIGHT CONTROL SYSTEM
.
LOC AP1 GS
LOC GS
CRS
090
HDG
045
SRP
20 20
10 10
10 10
20 20
N
33
30
W
24
21
S
15
12
E
6
3
H04.0NM
LOC1
HDG AP1 FLC
LOC VNAV
CRS
090
HDG
045
SRP
20 20
10 10
10 10
20 20
N
33
30
W
24
21
S
15
12
E
6
3
H12.0NM
LOC1
APPROACH MODE CAPTURE
APPROACH MODE INTERCEPT
INBOUND
COURSE
LOCALIZER
TX
SELECTED
HEADING
Typical Capture Point
Between 1 and 2 Dot
RUNWAY
090°
045°
APPROACH MODE TRACK
OUTER
MARKER
4.0-7.0 MILES
MIDDLE
MARKER
3500 FEET
RUNWAY
RADIO ALTITUDE
BETWEEN 1200
AND 1500 FEET
RADIO ALTITUDE
BETWEEN 200
AND 300 FEET
LOCALIZER
TX
RUNWAY
Typical Capture Point
is 1/3 Dot on GS Scale
GLIDESCOPE BEAM
Vertical
Deviation
Scale
GX_02_039
Vertical
Deviation
Pointer
LOC AP1 FLC
LOC GS
CRS
090
HDG
045
SRP
20 10 10
10 20 20
20
30
30
N
33
30
W
24
21
S
15
12
E
6
3
10
H09.0NM
LOC1
P I LOT T R A I N I N G GU I D E
AUTOMATIC FLIGHT CONTROL SYSTEM
2-38 For Training Purposes Only
Sept 04
TAKEOFF (TO) MODE
TO mode provides pitch and lateral commands during the takeoff phase of flight.
TO mode is activated by pushing one of the throttle-mounted TOGA buttons, while on
the ground. When TO mode is selected, all other lateral and vertical modes are cleared.
Lateral TO mode generates a wings level command. The wings level command will
remain active following automatic altitude capture. TO mode captures the current
heading at 80 kts during takeoff roll.
TO mode will capture the preselected altitude.
Vertical TO mode generates a fixed pitch attitude of 17.5°, based on power being
developed by the engines. In the event of a loss of an engine, (N1 < 70% on either
engine), the pitch command will be reduced to 13°.
The autothrottles will provide full takeoff thrust until TO mode is cleared.
TO mode can be cleared by selecting the AP on (PIT), or by selecting another vertical
mode.
GO AROUND (GA) MODE
GA mode provides pitch and lateral commands for a transition from an approach to
climb out condition, when a missed approach has occurred.
GA mode is activated by pushing one of the throttle-mounted TOGA buttons, while
airborne. When GA mode is selected, autopilot is disengaged and all other lateral and
vertical modes are cleared. The resultant AP disengage warning may be canceled by
pressing the AP DISC switch.
Lateral GA mode generates a wings level command and the heading flown at GA
selection will be captured. GA will capture the preselected altitude as long it is set to a
minimum of 500 feet above TOGA initiation altitude.
GX_02_040
20 20
10 10
10 10
ROL TO 200 3000
1500
180
170
160
150
140
145
6
4
TOGA
Button
1000
80
20
ROL TO
20 20
10 10
10 10
ROL GA 200 3000
　
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本文鏈接地址：Bombardier global AUTOMATIC FLIGHT CONTROL SYSTEM(14)