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conditions are met
‐ Selecting a higher altitude than present altitude when in EXP DES
‐ Selecting a lower altitude than present altitude when in EXP CLB
‐ Activating a reversion to V/S to protect the aircraft from exceeding VLS or VMAX.
Note: In FD mode only, it the flight crew does not follow the FD orders, a reversion to V/S
occurs when reaching VMAX + 4 in EXP CLB or VLS - 2 in EXP DES (VLS - 17 with
speedbrakes). Refer to DSC-22_30-75 General.
EXPEDITE disengages automatically with ALT* engagement.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT GUIDANCE
AP/FD VERTICAL MODES - EXPEDITE
A318/A319/A320/A321 FLEET DSC-22_30-70-90 P 2/4
FCOM 19 AUG 10
DISENGAGEMENT CONDITIONS
Applicable to:
The flight crew can disengage EXPEDITE manually by:
Pulling out the V/S or FPA knob ‐ to engage the V/S or FPA mode
‐ Pulling out the ALT knob to engage OP CLB or OP DES
‐ Pulling out the SPD/MACH knob to activate the selected speed target and engage OP CLB or OP
DES. A white box appears around the longitudinal mode and flashes for 10 s. A triple click sounds
‐ Pushing in the ALT knob to engage the CLB or DES mode, provided that the engagement
conditions are met
‐ Selecting a higher altitude than present altitude when in EXP DES. If this action is not followed by
another expected flight crew action within 5 s, a triple click sounds. A steady white box appears
around the longitudinal mode, then flashes for 10 s after the triple click
‐ Selecting a lower altitude than present altitude when in EXP CLB. If this action is not followed by
another expected flight crew action within 5 s, a triple click sounds. A steady white box appears
around the longitudinal mode, then flashes for 10 s after the triple click
‐ Activating a reversion to V/S to protect the aircraft from exceeding VLS or VMAX. A white box
appears around the longitudinal mode and flashes for 10 s. A triple click sounds.
Note: In FD mode only, it the flight crew does not follow the FD orders, a reversion to V/S
occurs when reaching VMAX + 4 in EXP CLB or VLS - 2 in EXP DES (VLS - 17 with
speedbrakes). Refer to DSC-22_30-75 General.
EXPEDITE disengages automatically with ALT* engagement.
GUIDANCE
Applicable to:
When the aircraft is in EXP CLB, the target speed is Green Dot, which is maintained with pitch
control. Autothrust, if active, sets the thrust at CLB THRUST automatically.
When the aircraft is in EXP DES, the target speed is 340 kt or M 0.8 which is maintained with pitch
control. Autothrust, if active, sets the thrust at IDLE automatically.
When EXPEDITE is engaged, the system disregards SPD CSTR, ALT CSTR, and SPD LIM.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT GUIDANCE
AP/FD VERTICAL MODES - EXPEDITE
A318/A319/A320/A321 FLEET DSC-22_30-70-90 P 3/4
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT GUIDANCE
AP/FD VERTICAL MODES - EXPEDITE
Intentionally left blank
A318/A319/A320/A321 FLEET DSC-22_30-70-90 P 4/4
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
AUTO FLIGHT - FLIGHT GUIDANCE
MODE REVERSIONS
A318/A319/A320/A321 FLEET DSC-22_30-75 P 1/18
FCOM 19 AUG 10
GENERAL
Applicable to: ALL
There are several types of mode reversions. Each one observes a specific logic that can be
described as follows.
INTERACTION BETWEEN LATERAL MODES,
VERTICAL MODES, AND MANAGED SPEED PROFILE
Applicable to:
When NAV mode is engaged:
The FMGS guides the aircraft along the flight plan and considers the constraints attached to the
F-PLN waypoints. As a result:
Managed ‐ CLB and DES modes are available
‐ The managed speed profile includes: V2 - SPD CSTR (if applicable) - SPD LIM - ECON CLB
SPD/MACH - ECON CRZ MACH - ECON DES (AUTO SPD) - SPD/MACH - SPD CSTR -
SPD LIM - HOLD SPD - VAPP/GS MIN.
It is valid for all vertical modes, except EXPEDITE .
When NAV mode is not engaged:
The FMGS considers that the flight plan is not followed, and ignores all speed and altitude
constraints linked to the F-PLN waypoints. As a result:
‐ The managed vertical CLB and DES modes are not available
‐ The managed SPD profile disregards the speed constraints and includes: V2 - SPD LIM -
ECON CLB - ECON CRZ - ECON DES (AUTO SPD) - SPD LIM - VAPP/GS MIN target.
As a consequence, when NAV mode disengages (manual or automatic):
‐ CLB mode, when engaged, reverts to OPEN CLB
‐ DES mode, when engaged, reverts to V/S mode on current value
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 2(98)
