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altitude constraint. If NAV mode is disengaged, the circle is removed.
‐ The PFD still shows VDEV for reference purposes.
‐ The target altitude is always the FCU selected altitude (shown in blue).
On the ND, level-off symbol is blue (no constraint). If NAV mode is engaged and the speed
target managed, speed constraints are considered.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
NORMAL PROCEDURES
SYSTEMS RELATED PROCEDURES - FMS
A318/A319/A320/A321 FLEET PRO-NOR-SRP-01-60 P 14/22
FCOM 19 AUG 10
Vertical position may also be assessed by comparing the required distance to land and the
distance to destination. The required distance to land is the distance to descend from the present
level down to VAPP at destination elevation, taking into account current speed, speed limit (if any)
wind compensation and an approach segment at VAPP.
Depending on aircraft configuration, the required distance to land is displayed :
‐ on the MCDU progress page, when HDG or TRK mode is engaged.
on the ND by the energy circle, when HDG or TRK mode is engaged. ‐ It is displayed as a green
arc oriented on the current track and centered on the aircraft current position.
Note: Altitude and speed predictions displayed on the F-PLN page assume an immediate
return to DES mode.
PROCEDURE
SET the FCU altitude as cleared by ATC, while considering the applicable safe altitude.
If the next safe altitude is higher than the ATC-cleared altitude, check with the ATC to verify that
this constraint applies.
If confirmed, set the FCU altitude to the safe altitude, until it is safe to fly at the cleared altitude.
MONITOR the speed target, when the aircraft reaches the speed change symbol.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
NORMAL PROCEDURES
SYSTEMS RELATED PROCEDURES - FMS
A318/A319/A320/A321 FLEET PRO-NOR-SRP-01-60 P 15/22
FCOM 19 AUG 10
MONITOR the FMA ALT*, ALT, upon reaching the level symbol.
When in HDG/TRK mode, MONITOR the energy circle �� on the ND.
The MCDU F-PLN page presents SPD/ALT constraint-matching predictions, which assume that
DES mode is immediately re-engaged.
CHECK the predictions before re-engaging DES mode (in order to resume the descent profile).
Note: VDEV is available on the PFD even in HDG mode ; it is a valuable tool for monitoring
the descent, as long as crosstrack error (XTK) is less than five nautical miles.
The aircraft automatically decelerates for approach, only if it flies over the DECEL
pseudo waypoint with NAV mode engaged (or LOC*, LOC).
Applicable to:
,
,
MSN,,,,
OP DES, V/S OR FPA MODE ENGAGED
‐ In either case, the aircraft is no longer guided on the descent profile and altitude constraints
are disregarded. If NAV mode is engaged the ND displays a white circle on waypoint with an
altitude constraint. If NAV mode is disengaged, the circle is removed.
‐ The PFD still shows VDEV for reference purposes.
‐ The target altitude is always the FCU selected altitude (shown in blue).
On the ND, level-off symbol is blue (no constraint). If NAV mode is engaged and the speed
target managed, speed constraints are considered.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
NORMAL PROCEDURES
SYSTEMS RELATED PROCEDURES - FMS
A318/A319/A320/A321 FLEET PRO-NOR-SRP-01-60 P 16/22
FCOM 19 AUG 10
When HDG or TRK mode is engaged, vertical position may also be assessed on the ND using
the energy circle. It is displayed as a green arc oriented on the current track and centered on the
aircraft current position.
Note: Altitude and speed predictions displayed on the F-PLN page assume an immediate
return to DES mode.
PROCEDURE
SET the FCU altitude as cleared by ATC, while considering the applicable safe altitude.
If the next safe altitude is higher than the ATC-cleared altitude, check with the ATC to verify that
this constraint applies.
If confirmed, set the FCU altitude to the safe altitude, until it is safe to fly at the cleared altitude.
MONITOR the speed target, when the aircraft reaches the speed change symbol.
MONITOR the FMA ALT*, ALT, upon reaching the level symbol.
When in HDG/TRK mode, MONITOR the energy circle �� on the ND.
The MCDU F-PLN page presents SPD/ALT constraint-matching predictions, which assume that
DES mode is immediately re-engaged.
CHECK the predictions before re-engaging DES mode (in order to resume the descent profile).
Note: VDEV is available on the PFD even in HDG mode ; it is a valuable tool for monitoring
the descent, as long as crosstrack error (XTK) is less than five nautical miles.
The aircraft automatically decelerates for approach, only if it flies over the DECEL
　
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