Engine Anti-Ice Schematic
DESCRIPTION - 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