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after lift-off).
The FMA displays “SRS” and “GA TRK” in green.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT GUIDANCE
AP/FD COMMON MODES - GO AROUND (GA)
A318/A319/A320/A321 FLEET DSC-22_30-80-40 P 2/4
FCOM 19 AUG 10
ENGAGEMENT CONDITIONS
Applicable to:
Setting at least one thrust lever to the TOGA detent engages both SRS/GA TRK modes, if:
The flaps lever ‐ is at least in position 1, and
‐ The aircraft is in flight, or
‐ The aircraft has been on ground for less than 30 s (AP disengages and can be re-engaged 5 s
after lift-off).
FD bars are automatically restored in SRS/GA TRK modes. If FPV/FPD was previously selected, it
reverts to FD bars.
The FMA displays “SRS” and “GA TRK” in green.
ENGAGEMENT CONDITIONS
Applicable to:
,
,
MSN,,,,
Setting at least one thrust lever to the TOGA detent engages both SRS/NAV modes, if:
‐ The flaps lever is at least in position 1, and
‐ The aircraft is in flight, or
‐ The aircraft has been on ground for less than 30 s (AP disengages and can be re-engaged 5 s
after lift-off).
FD bars are automatically restored in SRS/NAV modes. If FPV/FPD was previously selected, it
reverts to FD bars.
The FMA displays “SRS” and “NAV” in green.
DISENGAGEMENT CONDITIONS
Applicable to:
The SRS mode disengages:
‐ Automatically, at the Go-around acceleration altitude (GA ACC ALT), or if ALT* mode engages
(above 400 ft RA)
‐ If the flight crew engages another vertical mode
‐ If the flight crew selects a speed while in SRS mode: SRS reverts to OP CLB mode.
Note: In Engine Out conditions, the SRS mode does not automatically disengage at EO ACC
ALT. Refer to DSC-22_20-60-50 GENERAL.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT GUIDANCE
AP/FD COMMON MODES - GO AROUND (GA)
A318/A319/A320/A321 FLEET DSC-22_30-80-40 P 3/4
FCOM 19 AUG 10
GA TRK disengages when the flight crew engages another lateral mode, above 100 ft RA.
Note: In dual AP configuration, disengagement of the Go-around mode on either axis causes AP2
to disconnect.
DISENGAGEMENT CONDITIONS
Applicable to:
,
,
MSN,,,,
The SRS mode disengages:
‐ Automatically, at the Go-around acceleration altitude (GA ACC ALT), or if ALT* mode engages
(above 400 ft RA)
‐ If the flight crew engages another vertical mode
‐ If the flight crew selects a speed while in SRS mode: SRS reverts to OP CLB mode and a
triple-click aural warning is heard.
Note: In Engine Out conditions, the SRS mode does not automatically disengage at EO ACC
ALT. Refer to DSC-22_20-60-50 GENERAL.
GA TRK disengages when the flight crew engages another lateral mode, above 100 ft RA.
Note: In dual AP configuration, disengagement of the Go-around mode on either axis causes AP2
to disconnect.
GUIDANCE
Applicable to:
The SRS law maintains the current speed at Go-around engagement, or VAPP, whichever is higher.
When the SRS mode disengages, the target speed becomes Green Dot speed.
GA TRK mode guides the aircraft along the current track at Go-around initiation.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT GUIDANCE
AP/FD COMMON MODES - GO AROUND (GA)
A318/A319/A320/A321 FLEET DSC-22_30-80-40 P 4/4
FCOM 19 AUG 10
GUIDANCE
Applicable to:
,
,
MSN,,,,
The SRS law maintains the current speed at Go-around engagement, or VAPP, whichever is higher.
Nevertheless, the SRS speed target is limited to VLS+25 kt, in a two-engine configuration, and
VLS+15 kt, in an engine-out configuration. When the SRS mode disengages, the target speed
becomes Green Dot speed.
GA TRK mode guides the aircraft along the current track at Go-around initiation.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT GUIDANCE
AUTOTHRUST
A318/A319/A320/A321 FLEET DSC-22_30-90 P 1/16
FCOM 19 AUG 10
GENERAL
Applicable to: ALL
The autothrust (A/THR) is a function of the FMGS, it includes two independent A/THR commands,
one per FMGC. Each one is able to control the thrust of both engines simultaneously through two
Engine Interface Units and two Electronic Engine Controls (IAE engines) or two Engine Control Units
(CFM engines). Only one FMGC controls the active A/THR, it is called the master FMGC.
Thrust is controlled:
‐ Automatically when the A/THR is active
‐ Manually by the flight crew.
The autothrust is active when the A/THR pb of the FCU is lighted green and A/THR is displayed
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 2(110)
