SEVERE ICING ENCOUNTER
NOTE
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Severe icing may be encountered at temperatures as cold as -18°C. Increased vigilance is required at temperatures around 0°C ambient air temperature with visible moisture present.
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The following weather conditions may be conducive to severe in-flight icing:
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Visible rain at temperatures colder than 0°C ambient air temperature.
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Droplets that splash or splatter at temperatures colder than 0°C ambient air temperature.
IF SEVERE ICING IS PRESENT
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Severe icing conditions are indicated by one or more of the following visual cues:
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Unusually extensive ice accumulations on the airframe and windshield in areas not normally observed to collect ice.
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Accumulation of ice on the upper surface of the wing aft of the protected area.
1. Immediately request priority handling from Air Traffic Control to facilitate exiting the severe icing conditions.
2. Flaps - LEAVE IN CURRENT POSITION (Do not extend or retract).
3. Autopilot - DISENGAGE.
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CAUTION: BE PREPARED FOR CONTROL WHEEL FORCE REQUIRED TO MAINTAIN DESIRED FLIGHT PATH.
4. Avoid abrupt and excessive maneuvering that may aggravate control problems.
5. If unusual or uncommanded roll is encountered - REDUCE ANGLE OF ATTACK.