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W/S AHEAD AMBER
Apply precautionary measures, as indicated in the SUPPLEMENTARY TECHNIQUES (Refer to
PRO-SUP-91-10 GENERAL).
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
ABNORMAL AND EMERGENCY PROCEDURES
MISCELLANEOUS
A330/A340 FLEET PRO-ABN-80 P 136/140
FCOM 19 AUG 10
VOLCANIC ASH ENCOUNTER
Applicable to:
Accomplish the following, while making a 180 ° turn:
ATC........................................................................................................................................NOTIFY
A/THR.......................................................................................................................................... OFF
This prevents autothrust from generating thrust variations.
THRUST (conditions permitting).......................................................................................DECREASE
To reduce ash ingestion.
If altitude permits, reduce thrust to idle: This maximizes the engine surge margin, and lowers
engine turbine temperature.
CREW OXYGEN MASKS....................................................................................................ON/100 %
CABIN CREW..........................................................................................................................NOTIFY
PASSENGER OXYGEN...................................................................................................... AS RQRD
Depending on contamination.
ENG ANTI ICE..............................................................................................................................ON
WING ANTI ICE............................................................................................................................ON
PACK FLOW...................................................................................................................................HI
APU.........................................................................................................................................START
If possible, start the APU and have it ready for an assisted engine relight in the event of an engine
flame-out. (Refer to LIM-49-A GENERAL - APU STARTER).
APU bleed for engine relight is only available below FL 200.
ENGINE PARAMETERS..................................................................................................... MONITOR
Monitor EGT, in particular. If the EGT exceeds limits, it may become necessary to consider a
precautionary engine shutdown and engine restart in flight.
AIRSPEED INDICATIONS...................................................................................................MONITOR
If airspeed is unreliable or lost, Refer to PRO-ABN-34 UNRELIABLE SPEED INDICATION/ADR
CHECK PROC - GENERAL .
If all engines flame out and speed indications are lost, Refer to PRO-ABN-70-C ENG ALL ENG
FLAME OUT to obtain the required pitch attitude for the optimum relight speed. In case of an
engine failure, switch off the wing anti-ice before engine restart.
To be continued on next page
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
ABNORMAL AND EMERGENCY PROCEDURES
MISCELLANEOUS
A330/A340 FLEET PRO-ABN-80 P 137/140
FCOM 19 AUG 10
VOLCANIC ASH ENCOUNTER (Cont'd)
Note: If sufficient visibility is not granted for approach due to windshield/window damage,
consider AUTOLAND. If AUTOLAND is not available, consider opening the sliding window
on the PF’s side, after cabin depressurization.
�� To manually depressurize the cabin:
CAB PRESS MODE SEL........................................................................................MAN
MAN V/S CTL.................................................................................................. FULL UP
Due to the increased noise level, pay particular attention to visual warnings.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
ABNORMAL AND EMERGENCY PROCEDURES
MISCELLANEOUS
A330/A340 FLEET PRO-ABN-80 P 138/140
FCOM 19 AUG 10
VOLCANIC ASH ENCOUNTER
Applicable to: ,
Accomplish the following, while making a 180 ° turn:
ATC........................................................................................................................................NOTIFY
A/THR.......................................................................................................................................... OFF
This prevents autothrust from generating thrust variations.
THRUST (conditions permitting).......................................................................................DECREASE
To reduce ash ingestion.
If altitude permits, reduce thrust to idle: This maximizes the engine surge margin, and lowers
engine turbine temperature.
　
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