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Inspect the inlets and order them cleaned of any deposit. Have the area within 25 ft of the engine
inlet cleaned of volcanic ash (as much as practical).
Applicable to: ALL
ENGINE START
Use external pneumatic power to start the engines, if available. (Refer to PRO-SUP-70 ENGINE
START WITH ELECTRICAL EXTERNAL POWER).
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
ADVERSE WEATHER - OPERATIONS IN VOLCANIC ASH, SAND OR DUST
A330/A340 FLEET PRO-SUP-91-40 P 2/8
FCOM 19 AUG 10
ENGINE................................................................................................................................ CRANK
Before engine start, ventilate them by dry cranking at maximum motoring speed for two minutes.
This will blow out any ash that may have entered the booster area.
Applicable to:
TAXI
After releasing the brakes :
THRUST LEVERS............................................................................................................................
...................................................ADVANCE SMOOTHLY THEN MOVE TO IDLE WHEN ROLLING
Smoothly advance the levers to the minimum required for breakaway.
Avoid making sharp or high-speed turns.
ENG 1, 2, 3, 4 BLEED................................................................................................................OFF
Keep the bleed valves closed for taxiing, particularly in volcanic ash.
In case of crosswind, when performing a 180 ° turn on the runway, initiate this turn with the nose
down wind in order to prevent ash, sand or dust ingestion.
Applicable to: ,
TAXI
After releasing the brakes :
THRUST LEVERS............................................................................................................................
...................................................ADVANCE SMOOTHLY THEN MOVE TO IDLE WHEN ROLLING
Smoothly advance the levers to the minimum required for breakaway.
Avoid making sharp or high-speed turns.
ENG 1, 2 BLEED.........................................................................................................................OFF
Keep the bleed valves closed for taxiing, particularly in volcanic ash..
In case of crosswind, when performing a 180 ° turn on the runway, initiate this turn with the nose
down wind in order to prevent ash, sand or dust ingestion.
Applicable to: ALL
TAKEOFF
Allow ash, dust and sand (if present) to settle on the runway before starting the takeoff roll.
Use the rolling takeoff technique, if possible.
Adjust progressively engine power as for normal takeoff procedures.
To prevent contamination of the air conditioning system, consider a takeoff with packs OFF.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
ADVERSE WEATHER - OPERATIONS IN VOLCANIC ASH, SAND OR DUST
A330/A340 FLEET PRO-SUP-91-40 P 3/8
FCOM 19 AUG 10
Applicable to: ALL
LANDING
REVERSERS................................................................................ USE AS LIGHTLY AS FEASIBLE
If it appears that maximum reverse thrust will be needed, apply reverse thrust when the main
landing gear touches down. Limit the use of reverse thrust as much as possible, because reverse
flow may throw up ash, sand or dust and impair visibility.
Note: The abrasive effect of volcanic ash on windshields and on landing lights may significantly
reduce the pilot’s visibility for approach and landing. Consider diverting to an airfield
where it is possible to use AUTOLAND.
Applicable to: ALL
SECURING THE AIRCRAFT
If the aircraft is to be parked at an airport contaminated with volcanic ash, sand or dust, install
engine inlet covers and other protective covers and plugs.
In addition:
�� After switching off all bleeds, and before switching off AC power:
DITCHING pushbutton............................................................................................................ON
This closes the outflow valve, the pack valves, the avionic ventilation inlet and the extract
valves.
�� After switching off the batteries:
DITCHING pushbutton.......................................................................................................... OFF
PROTECTIVE COVERS................................................................................................INSTALL
Install protective covers and plugs, to protect the aircraft and engines from volcanic ash.
FLIGHT OPERATIONS WITH VOLCANIC ASH
Applicable to:
Avoid flight into areas of known volcanic activity.
If a volcanic eruption is reported while the aircraft is in flight, reroute the flight to remain well clear of
　
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