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selected flight level (if STD baro reference is selected.)
When the FMGC operates in the vertical managed mode, this symbol is magenta if it
represents a flight plan altitude constraint that the FMGC will follow. If the target altitude
or flight level is on the scale, the symbol is displayed and the numerical value appears
inside the symbol.
If it is off the scale, the symbol is not displayed, and the numerical value appears above
or underneath the scale.
Barometric Reference
The display shows "STD" or it shows "QNH" and the numerical setting in hectoPascals
or inches of mercury.
It pulses when the selection made by the pilot is not correct (STD not selected above
transition altitude in climb or STD still selected in approach below transition level or 2500
feet radio height if transition level is not available).
CCM MSlt tO68
┏━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━┳━━━━━━━━━┓
┃I  -~ A318                      ┃INDICATING/RECORDING SYSTEMS  ┃1.31.40     P 11  ┃
┃  .*,,.8, ,, ~L,~ A319          ┃                              ┃                  ┃
┃ Lli,~ A320                     ┃                              ┃                  ┃
┃                                ┃                              ┣━━━━┳━━━━┫
┃      A~7-~'M" A321             ┃        INDICATIONS ON PFD    ┃SEQ 001 ┃REV 33  ┃
┃   FLIGHT CREW OPERATING MANUAL ┃                              ┃        ┃        ┃
┗━━━━━━━━━━━━━━━━┻━━━━━━━━━━━━━━━┻━━━━┻━━━━┛
;7
0
Altitude Indication
This appears both as a white moving scale, and as a green digital readout on a grey
blackground. "NEG" appears in the window in white for negative values. The altitude
window changes from yellow to amber, if the aircraft deviates from the FCU-selected
altitude or flight level.
On any approach for which an MDA (MDH) is entered in the FMGS, the altitude numbers
change from green to amber, when the aircraft goes below the MDA (MDH).
(~ Vertical Deviation (magenta)
This symbol appears next to the altitude corresponding to the theoretical vertical profile
computed by the FMGC. It is displayed from the top of descent down to the final
intercept altitude.
The pilot can read the VDEV directly from the altitude scale. The range is _+ 500 feet.
When the VDEV value exceeds _+ 500 feet, the symbol stays at the range limit and the
PROG page displays the exact value.
CCM MSN  '1'145
┏━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━┳━━━━━━━━━━━┓
┃                                ┃                                ┃1.31.40     P 12      ┃
┃                                ┃                                ┣━━━━━┳━━━━━┫
　
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本文鏈接地址：AIRBUS A320 Flight Crew Operating Manual4(52)