Anti-Ice Panel

Engine Anti-Ice Schematic

Engine Anti-ice SwitchDESCRIPTION - Each engine nacelle is anti-iced by pneumatic bleed air. The engine anti-ice ducting is independent of the pneumatic system ducting. Each engine anti-ice valve is electrically controlled by the respective ENG ANTI ICE switch and is pneumatically operated. The engine must be running for the valve to open.

When either engine anti-ice valve is open:

  • Maximum N1 is limited.
  • Continuous ignition is provided
  • Minimum idle RPM is increased
  • The valves open with a loss of electrical power