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with the required descent path. (The pilot may use a V/S of 1 000 ft/min).
�� If the descent is delayed by ATC:
Beyond TOD, a DECELERATE message comes up on PFD and MCDU. This suggests to the
crew that it starts reducing the speed towards green dot speed (with ATC permission).
When cleared to descent, select DES mode with managed speed active.
DESCENT MONITORING
Applicable to: ALL
PF MCDU..................................................................................................................PROG/PERF DES
PF MCDU should be set to PROG or PERF DES page:
‐ PROG page in order to get VDEV information
PERF DES in order to get predictions down to any ‐ inserted altitude in DES/OP DES modes
PNF MCDU.................................................................................................................................F-PLN
DESCENT............................................................................................................................ MONITOR
(Refer to PRO-NOR-SRP-01-60-A DESCENT MONITORING - DES MODE ENGAGED)
When flying in NAV mode, use DESA mode.
The aircraft descends along the descent flight path: the PFD and PROG page display VDEV, and so
it can be monitored. All constraints of the flight plan are taken into account for the guidance.
When the aircraft is flying in HDG or TRK mode, and thus out of the lateral F-PLN, DES mode is not
available.
However the PFD still displays VDEV, and this is useful whenever cross track error is small (up to
5 nm).
The NDs show a level-off symbol along the flight path. Its position is based on the current active
AP/FD and A/THR modes.
The flight crew can use this symbol as well as Energy Circle, to monitor the descent. MCDU
predictions assume a return to the lateral F-PLN and descent flight path.
Note that whenever the lateral mode is changed from NAV to HDG/TRK the vertical mode reverts to
V/S at the value pertaining at the time of the mode change.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
NORMAL PROCEDURES
STANDARD OPERATING PROCEDURES - DESCENT
A330/A340 FLEET PRO-NOR-SOP-17 P 2/4
FCOM 19 AUG 10
From time to time during stabilized descent, the flight crew may select FPA to check that the
remaining distance to destination is approximately the altitude change required divided by the FPA in
degrees.
FPA (°) = Δ FL/DIST (NM)
DESCENT ADJUSTMENT
Applicable to: ALL
To increase the rate of descent:
‐ Increase descent speed (by use of selected speed) if comfort and ATC permit. It is economically
better (Time/Fuel) than the following procedures.
‐ Maintain high speed as long as possible. (SPD LIM may be suspended, subject to ATC
clearance).
‐ If the aircraft is high and at high speed, it is more efficient to keep the high speed to ALT* and
decelerate, rather than to mix descent and deceleration.
‐ If the aircraft goes below the desired profile, use SPEED and the V/S mode to adjust the rate of
descent.
Applicable to: ALL
SPEED BRAKES lever...........................................................................................................AS RQRD
In OPEN DES: Use SPEED BRAKES lever to increase the rate of descent. The pilot may use up to
half speedbrake to maintain the required rate of descent, when engine anti-ice is used.
In DES mode: If the aircraft is on, or below, the flight path and the ATC requires a higher rate of
descent, do not use SPEED BRAKES lever because the rate of descent is dictated by the planned
flight path. Thus, the A/THR may increase thrust to compensate for the increase in drag. In this case,
use OPEN DES with SPEED BRAKES lever.
Applicable to:
RADAR TILT........................................................................................................................... ADJUST
Applicable to: ,
RADAR.................................................................................................................... AS APPROPRIATE
Applicable to:
BARO REF................................................................................................................................... SET
Set QNH (or QFE �� ) on the EFIS control panel and on the standby altimeter, when approaching
the transition level, and when cleared for an altitude.
Crosscheck baro settings and altitude readings.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
NORMAL PROCEDURES
STANDARD OPERATING PROCEDURES - DESCENT
A330/A340 FLEET PRO-NOR-SOP-17 P 3/4
FCOM 19 AUG 10
Note: When operating in low OAT, altitude corrections, as Refer to PER-OPD-GEN ALTITUDE
TEMPERATURE CORRECTION should be considered.
Applicable to: ,
BARO REF.....................................................................................................................................SET
　
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