A320 Ice & Rain Protection Questions

The electric windshield wipers are controlled:

• Automatically when in heavy rain
• By two individual pushbuttons
• By one rotary selector for both windshields
• By two individual rotary selectors

Explanation: Each front windshield has its own rotary selector controlling its wiper, so the two wipers are controlled by two individual rotary selectors.

Ice & Rain Protection - Rain Removal (Description, Wipers)

The ______ on each wing are anti-iced with pneumatic bleed air.

• Slats
• Flaps
• Slat 3, 4 & 5.
• Slat 1 & 2.

Explanation: The three outboard leading-edge slats (3, 4, and 5) of each wing are anti-iced with hot bleed air from the pneumatic system.

Ice & Rain Protection - Wing Anti-Ice (Description)

In the event of a low air pressure:

• The engine anti-ice valve opens automatically
• There is no effect on the anti-ice valve position
• The engine anti-ice valve must be manually closed
• The engine anti-ice valve closes automatically

Explanation: The engine anti-ice valve automatically closes whenever bleed air isn't available to supply it - the equivalent of a low-pressure condition - rather than needing to be closed manually or staying open regardless.

Ice & Rain Protection - Engine Anti-Ice (Description)

The engine nacelle is anti-iced by:

• Air bleed from the high pressure compressor
• Air bleed from low pressure compressor
• AC system and air bleed from low pressure compressor
• DC system and air bleed from low pressure compressor.

Explanation: Each engine nacelle is protected from ice by an independent air bleed from its high-pressure compressor.

Ice & Rain Protection - Engine Anti-Ice (Description)

The Fault light on the engine anti-ice switches indicates the valve:

• Is closed.
• Position disagrees with switch position.
• Is open.

Explanation: The engine anti-ice FAULT light comes on when the anti-ice valve's actual position disagrees with the selected pushbutton position.

Ice & Rain Protection - Engine Anti-Ice (Controls and Indicators, Overhead Panel)

At what power level does window heat operate while airborne?

• High power while airborne.
• Shifts from low to high as window temperature requires.
• Low power above 18,000 ft.
• Low power above 25,000 ft.

Explanation: In flight, window heat operates at normal (higher) power - the low-power level is used only on the ground.

Ice & Rain Protection - Window Heat (Description)

The drain masts are heated after first engine start.

• True.
• False

Explanation:

In the event of an electrical power loss:

• The engine anti-ice valves will open automatically, anti-icing is ensured.
• The engine anti-ice valves will close automatically, anti-icing is lost.
• The engine anti-ice valves will be controlled by the wing anti-ice controls.
• The engine anti-ice valves remain in the position they were before.

Explanation: If electrical power fails, the engine anti-ice valves open automatically (fail-open), so anti-icing capability is preserved rather than lost.

Ice & Rain Protection - Engine Anti-Ice (Description)