Type-Rating - A320 A320 Type Rating

Ice and Rain Protection

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Question 15543
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What happens when the wing anti-ice p/b is set to ON on the ground?
A
the wing anti-ice control valves do not open.
B
the wing anti-ice control valves open for 30 seconds as a test sequence.
C
wing anti-ice control valves open if a pneumatic supply is available, and remain open.
D
wing anti-ice control valves open provided OAT <10c.