ON (in the air) – Wing anti-ice control valves are open

• Stick shaker logic is set for icing conditions.

NOTE

Stick shaker logic remains set for icing conditions for the remainder of the flight, regardless of subsequent WING ANTI-ICE Switch position.

ON (on the ground) – Wing anti-ice control valves open if thrust on both engines is below takeoff warning setting and temperature inside both distribution ducts is below thermal switch activation temperature

• Control valves close if either engine thrust is above takeoff warning setting or thermal switch is activated in either distribution duct. Switch remains ON
• Switch trips OFF at liff-off.