Boeing 737 NG Systems Review
Forward Overhead Panel  700/800/900
Display Selector
Wing and Engine Anti - Ice Panel
ENGINE ANTI–ICE Switches
ON –
  • Related engine anti–ice valve is open
  • Stick shaker logic is set for icing conditions.
OFF –
  • Related engine anti–ice valve is closed
  • Stick shaker logic returns to normal if wing anti–ice has not
    been used in flight.
Switch ON - TAI is annunciated above the N1 gauge on the
Upper Display Panel.

Illuminated –
  • Green – cowl anti–ice valve(s) open
  • Amber – cowl anti–ice valve is not in position indicated by
    related engine anti–ice switch.