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APU is started and air conditioning is on.
Note: 1. Ground power should be used for the APU start if the OAT is -15 °C (5 °F) or lower.
2. For temperatures below -15 °C (5 °F) in the cockpit, the display units may not be
available.
�� If the avionic bay is cold soaked (aircraft parked without electrical ground supply or
without air conditioning) :
IRS...............................................................................................................INITIATE ALIGNMENT
For temperatures below -15 °C (5 °F) in the avionic bay, IRS alignment needs 15 min.
PROBE/WINDOW HEAT...................................................................................................................ON
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
ADVERSE WEATHER - COLD WEATHER
A330/A340 FLEET PRO-SUP-91-30 P 2/12
FCOM 19 AUG 10
SURFACES.................................................................... CHECK FREE OF FROST, ICE AND SNOW
All surfaces of the aircraft (critical surfaces : Leading edges and upper surfaces of wings, vertical
and horizontal stabilizers, all control surfaces, slats and flaps) must be clear of snow, frost and ice for
takeoff.
Thin hoarfrost is acceptable on the upper surface of the fuselage.
Note: Thin hoarfrost is typically a white crystalline deposit which usually develops uniformly on
exposed surfaces on cold and cloudless nights. It is so thin that surface features (lines or
markings) can be distinguished beneath it.
On the underside of the wing tank area, a maximum layer of 3 mm (1/8 in) of frost will not penalize
takeoff performance.
FOLLOWING EQUIPMENT............................................ CHECK FREE OF FROST, ICE AND SNOW
Landing gear : Assemblies ‐ (lever locks), tires, and doors.
‐ Engine : Inlets, inlet lips, fans (check free rotation), spinners, fan exhaust ducts, reverser
assemblies
‐ Drains, bleeds, probes (pitots, static ports, TAT sensors, angle-of-attack sensors)
‐ Fuel tank ventilation
‐ Radome
‐ Commercial water supplies : Verify that the commercial water supplies are emptied before the cold
soak, that they are not frozen, and that they have been refilled.
�� After start of either inner engine :
PROBE/WINDOW HEAT........................................................................................................AUTO
Heating will continue to operate automatically.
EXTERIOR INSPECTION
Applicable to: ,
Before each flight, a detailed check of the following items should be performed :
Check that the APU intake, packs inlet and outlet doors, outflow valves and pressure relief valve are
free from snow and ice. De-ice as necessary. Remove all protective covers.
PRELIMINARY COCKPIT PREPARATION (normal procedures)..........................................................
...........................................................................................................................................COMPLETE
APU is started and air conditioning is on.
Note: 1. Ground power should be used for the APU start if the OAT is -15 °C (5 °F) or lower.
2. For temperatures below -15 °C (5 °F) in the cockpit, the display units may not be
available.
A330/A340 FLIGHT CREW
OPERATING MANUAL
PROCEDURES
SUPPLEMENTARY PROCEDURES
ADVERSE WEATHER - COLD WEATHER
A330/A340 FLEET PRO-SUP-91-30 P 3/12
FCOM 19 AUG 10
�� If the avionic bay is cold soaked (aircraft parked without electrical ground supply or
without air conditioning) :
IRS...............................................................................................................INITIATE ALIGNMENT
For temperatures below -15 °C (5 °F) in the avionic bay, IRS alignment needs 15 min.
PROBE/WINDOW HEAT...................................................................................................................ON
SURFACES.................................................................... CHECK FREE OF FROST, ICE AND SNOW
All surfaces of the aircraft (critical surfaces : Leading edges and upper surfaces of wings, vertical
and horizontal stabilizers, all control surfaces, slats and flaps) must be clear of snow, frost and ice for
takeoff.
Thin hoarfrost is acceptable on the upper surface of the fuselage.
Note: Thin hoarfrost is typically a white crystalline deposit which usually develops uniformly on
exposed surfaces on cold and cloudless nights. It is so thin that surface features (lines or
markings) can be distinguished beneath it.
On the underside of the wing tank area, a maximum layer of 3 mm (1/8 in) of frost will not penalize
takeoff performance.
FOLLOWING EQUIPMENT............................................ CHECK FREE OF FROST, ICE AND SNOW
　
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