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OPERATIONAL RECOMMENDATIONS
TAKEOFF
Predictive Windshear ("WINDSHEAR AHEAD" aural warning)
If a predictive windshear aural warning is generated on the runway before takeoff, takeoff
must be delayed.
If a predictive windshear aural warning is generated during the takeoff roll, the Captain must
reject the takeoff (the aural warning is inhibited at speeds greater than 100 kt).
If a predictive windshear aural warning is generated during initial climb, the flight crew must:
• Set TOGA
• Closely monitor the speed and the speed trend
• Ensure that the flight path does not include areas with suspected shear
• Change the aircraft configuration, provided that the aircraft does not enter windshear.
A330/A340 FLIGHT CREW TRAINING MANUAL
SUPPLEMENTARY INFORMATION
ADVERSE WEATHER
A330/A340 FLEET SI-010 P 13/16
FCTM 17 JUN 09
Reactive windshear ("WINDSHEAR, WINDSHEAR, WINDSHEAR" aural warning) or windshear
detected by pilot observation
If the windshear starts before V1, with significant speed and speed trend variations, and the
Captain decides that there is sufficient runway to stop the airplane, the Captain must initiate a
rejected takeoff.
If the windshear starts after V1, the flight crew must select TOGA and must apply the QRH
checklist actions from memory. The following points should be stressed:
• The configuration should not be changed until the aircraft is definitely out of the shear,
because operating the landing gear doors causes additional drag.
• The PF must fly SRS pitch orders rapidly and smoothly, but not aggressively, and must
consider the use of full backstick, if necessary, to minimize height loss.
• The PNF should call out the wind variations from the ND and V/S and, when clear of the
shear, report the encounter to ATC.
• For a DRT Takeoff , asymmetric TOGA thrust cannot be applied, if the speed is less
than F in CONF 2 or 3, due to VMCA considerations.
APPROACH
Predictive Windshear
In case the "MONITOR RADAR DISPLAY" is displayed or the ADVISORY ICON appears,
the flight crew should either delay the approach or divert to another airport. However, if the
approach is continued, the flight crew should consider the following:
• The weather severity must be assessed with the radar display.
• A more appropriate runway must be considered.
• A CONF 3 landing should be considered
• Managed speed should be used, because it provides the GS mini function.
• The flight crew should increase the VAPP displayed on MCDU PERF APP page up to a
maximum VLS +15 kt.
• Using the TRK/FPA or ILS, for an earlier detection of vertical path deviation should be
considered.
• In very difficult weather conditions, the A/THR response time may not be sufficient to
manage the instantaneous loss of airspeed. For the description of the applicable technique,
Refer to NO-100 final approach.
• In case the "GO AROUND WINDSHEAR AHEAD" message is triggered, the PF must
set TOGA for go-around. The aircraft configuration can be changed, provided that the
windshear is not entered. Full back stick should be applied, if required, to follow the SRS or
minimize loss of height.
A330/A340 FLIGHT CREW TRAINING MANUAL
SUPPLEMENTARY INFORMATION
ADVERSE WEATHER
A330/A340 FLEET SI-010 P 14/16
FCTM 17 JUN 09
Reactive Windshear
In case of the "WINDSHEAR WINDSHEAR WINDSHEAR" aural warning, the PF must set
TOGA for go-around. However, the configuration (slats/flaps, gear) must not be changed until
out of the shear. The flight crew must closely monitor the flight path and speed.
VOLCANIC ASH
Applicable to: ALL
PREFACE
Volcanic ash or dust consists of very abrasive particles, that may cause engine surge and severe
damage to aircraft surfaces that are exposed to the airflow. For this reason, operations in volcanic
ash must be avoided. However, if such operations cannot be avoided, the operators should apply
the following recommendations.
GROUND OPERATIONS
PRELIMINARY COCKPIT PREPARATION
The use of APU should be avoided whenever possible, and the use of the Ground Power Unit
(GPU) should be preferred. The wipers must not be used for any reason.
EXTERIOR INSPECTION
Maintenance personnel must remove ash that has settled on exposed lubricated surfaces
that can penetrate seals or enter the engine gas path, air conditioning system, air data probes
and other orifices on the aircraft. They must clean the engines air inlet of any volcanic ash. In
addition, they must clean the 25-feet area around the engine inlet.
ENGINE START
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A330/A340机组训练手册FLIGHT CREW TRAINING MANUAL(103)
