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┃I  ~-~ A318                     ┃l          AFLIGHTIGUIDANCE ┃SEQ 100 1 ┃I REV 25  ┃
┃ aw aw ,, ~e~ A319              ┃                            ┃          ┃          ┃
┃ Lii,~ A320                     ┃                            ┃          ┃          ┃
┃      A~7-~'M" A321             ┃                            ┃          ┃          ┃
┃   FLIGHT CREW OPERATING MANUAL ┃                            ┃          ┃          ┃
┗━━━━━━━━━━━━━━━━┻━━━━━━━━━━━━━━┻━━━━━┻━━━━━┛
R OPEN DESCENT MODE (OP DES)
The OPEN DESCENT mode is a selected mode. It maintains a SPD/MACH (selected or
managed) with the AP/FD pitch mode while autothrust (if active) maintains IDLE thrust.
It is not to be used for final approach.
ENGAGEMENT CONDITIONS
The OPEN DES mode can be engaged only if the following conditions are met
- The aircraft has been in flight for more than five seconds,
- LAND mode is not engaged.
- The FCU selected altitude is lower than present altitude.
The OPEN DES mode is engaged by one of the following :
- Pulling out the ALT selection knob.
- Selecting a manual speed when EXP mode is engaged. <~
Note : When OP DES is engaged :
        - The FMA displays "OP DES".
        - The managed LVL/CH dot on the FCU goes out.
        - The system arms the ALT mode.
DISENGAGEMENT CONDITIONS
Manual engagement of another vertical mode.
Selection of an altitude higher than present altitude. V/S (FPA) engages on current V/S
(FPA).
┏━━━━━━━━━━━━━━━━┳━━━━━━━━┳━━━━━━━━━━━┓
┃I  ~-~ A318                     ┃  AUTO FLIGHT   ┃1.22.30     P 33      ┃
┃ aw aw ,, ~e~ A319              ┃                ┃                      ┃
┃                                ┃                ┣━━━━━┳━━━━━┫
┃ Lli,~ A320                     ┃                ┃SEQ 100 I ┃I REV 34  ┃
┃      A~7-~'M" A321             ┃FLIGHT GUIDANCE ┃          ┃          ┃
┃   FLIGHT CREW OPERATING MANUAL ┃                ┃          ┃          ┃
┗━━━━━━━━━━━━━━━━┻━━━━━━━━┻━━━━━┻━━━━━┛
R
R
R
GUIDANCE
When OPEN DES is engaged, pitch control maintains the target speed/Mach number, and
　
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本文鏈接地址：AIRBUS A320 Flight Crew Operating Manual2(44)