SUPPLEMENTARY INFORMATION
ADVERSE WEATHER
A318/A319/A320/A321
FLIGHT CREW TRAINING MANUAL
? 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. Refer to NO-100 FINAL APPROACH for the applicable technique description.
? 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.
Reactive windshear (if available)
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 will 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 ft area around the engine inlet.
ENGINE START
The use of an external pneumatic supply should be preferred when possible. If not possible, the APU may be used to start the engines.
SUPPLEMENTARY INFORMATION
ADVERSE WEATHER
A318/A319/A320/A321
FLIGHT CREW TRAINING MANUAL
Before starting the engines, the crew must use dry cranking. This will blow out any ash that may have entered the booster area.
TAXI
The flight crew must move forward the thrust levers smoothly to the minimum required thrust to taxi, and must avoid any sharp or high-speed turns. The bleeds must be kept OFF.
TAKE-OFF
It is advisable to use the rolling takeoff technique, and smoothly apply thrust. IN FLIGHT
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