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┃FII~o ~o ┃~o~ I~ ┃
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┃~O O ┃@ ┃[] ~ I~] ┃
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The pilot can engage the mode manually as follows :
- Pull out the V/S FPA selection knob (at least five seconds after lift-off) or push it in for
an immediate level-off (V/S = 0).
- Engage the AP and/or FD if AP and FD were not engaged (basic mode of AP/FD
engagement).
- Select a different altitude (more than 250 feet from present altitude) when in ALT*.
- Select a higher altitude than present altitude when in DES, OP DES, or EXP DES<~ mode.
- Select a lower altitude than present altitude when in CLB, OP CLB, or EXP CLB<~ modes.
The mode engages automatically :
- five seconds after lift-off, if no other vertical mode is engaged
- upon loss of G/S* or G/S mode
- upon loss of FINAL mode
- upon loss of LOC* or LOC mode
- upon loss of NAV mode when DES mode is engaged
- upon loss of vertical flight path in DES mode
CCM ALL
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┃ ┃ ┃1.22.30 P 38 ┃
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┃I ~-~ A318 ┃l AFLIGHTIGUIDANCE ┃SEQ 210 1 ┃I REV 28 ┃
┃ aw aw ,, ~e~ A319 ┃ ┃ ┃ ┃
┃ Lli,~ A320 ┃ ┃ ┃ ┃
┃ A~7-~'M" A321 ┃ ┃ ┃ ┃
┃ FLIGHT CREW OPERATING MANUAL ┃ ┃ ┃ ┃
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DISENGAGEMENT CONDITIONS
The pilot can disengage the V/S mode manually by
- pulling or pushing the altitude selector knob
- pushing the EXPED pushbutton <~ or
- initiating a go-around.
It disengages automatically :
- when the aircraft reaches the FCU altitude or
- upon G/S* engagement.
GUIDANCE
The FMGC pitch mode guides the aircraft to the target V/S or FPA. The corresponding
A/-rHR mode is SPEED or MACH. The FMA displays "V/S (FPA)".
The V/S (FPA) guidance has priority over the speed guidance. If the selected target V/S or
FPA is too high (relative to the current thrust condition and speed), the FMGC will steer the
aircraft to the target V/S or FPA, but the aircraft will also accelerate or decelerate. When
the speed reaches the authorized limit, the V/S or FPA decreases automatically to maintain
the minimum (or maximum) speed limit.
Note : If the pilot sets V/S = 0 or pushes the V/S-FPA pushbutton to level off (if the push
to level off function is installed), it automatically sets the V/S or FPA target to zero
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本文链接地址：
AIRBUS A320 Flight Crew Operating Manual2(48)
