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surfaces and could penetrate seals or enter the engine gas path, air conditioning system, air data
probes, access doors and panels and other orifices on the aircraft.
ENGINE/APU INLETS....................................................................... CHECK FREE OF DEPOSITS
Inspect the inlets and order them cleaned of deposit. Have the area within 25 ft of the engine inlet
cleaned of volcanic ash (as much as practical).
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
ADVERSE WEATHER - OPERATIONS ON
AIRPORTS COVERED WITH ASH, SAND OR DUST
A318/A319/A320/A321 FLEET PRO-SUP-91-40 P 2/6
FCOM 19 AUG 10
ENGINE START
Use external pneumatic supply for starting the engines, if it is available. (Refer to PRO-SUP-70
Engine Start with External Pneumatic Power).
ENGINE................................................................................................................................ CRANK
Before starting the engines, ventilate them by dry cranking at maximum motoring speed for two
minutes. This will blow out any contaminant ash that may have entered the booster area.
TAXI
After releasing the brakes:
THRUST LEVERS............................................................................................................................
...................................................ADVANCE SMOOTHLY THEN MOVE TO IDLE WHEN ROLLING
Advance the levers smoothly to the minimum required for breakaway.
Avoid making sharp or high-speed turns.
ENG 1, ENG 2 BLEED................................................................................................................OFF
Keep 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.
TAKEOFF
Allow ash,sand and dust (if present) to settle on 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 air conditioning system, consider a takeoff with packs OFF.
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, dust and impair visibility.
Note: The abrasive effect of volcanic ash on windshields and landing lights may reduce the
pilot’s visibility for approach and landing significantly. Consider diverting to an airfield
where it is possible to use AUTOLAND.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
ADVERSE WEATHER - OPERATIONS ON
AIRPORTS COVERED WITH ASH, SAND OR DUST
A318/A319/A320/A321 FLEET PRO-SUP-91-40 P 3/6
FCOM 19 AUG 10
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 pb ........................................................................................................................ ON
This closes the outflow valve, pack valves and avionic ventilation inlet and extract valves.
After switching off the batteries :
DITCHING pb .......................................................................................................................OFF
PROTECTIVE COVERS................................................................................................INSTALL
Install protective covers/plugs, to protect the aircraft/engines from volcanic ash.
FLIGHT OPERATIONS WITH VOLCANIC ASH
Applicable to:
MSN,
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 the affected area (volcanic dust may spread over several hundred miles). If possible, stay on the
upwind side of the volcano (at least 20 nm upwind of it if it is erupting).
In hours of darkness or in meteorological conditions that obscure volcanic dust, one or several of the
following phenomena indicate that the aircraft may be flying into ash cloud:
• smoke or dust in the cockpit,
• acrid odor similar to that of electrical smoke,
• at night, the appearance of St. Elmo’s fire and static discharges around the windshield,
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A320机组操作手册FLIGHT CREW OPERATING MANUAL 14(119)
