1. What happens when you turn the nacelle anti-­‐ice switches on?
    • • NAI valve opens when the bleed air pressure is available.
    • • Engine igniters selected by the Auto Ignition selector and EEC
    • operate continuously.
    • • PRV opens when anti-­‐ice is ON.

    FCOM, VOL 2; 3.10.2
  2. What conditions would prevent the PRV from opening when nacelle anti-­‐ice
    is on?
    • Prior or present bleed air overheat • Start valve not closed • HP bleed air valve failed open

    FCOM, VOL 2; 3.10.2
  3. With the Nacelle Anti-­‐Ice Switches in AUTO during icing conditions, while o
    the ground, prior to takeoff, would the system be on or off?
    • OFF, on the ground

    FCOM, VOL 2; 3.10.2
  4. If in the NAI AUTO position, with the anti-­‐ice valves open at touchdown, when do the valves close?  
    • Valves remain open until engine shutdown

    FCOM, VOL 2; 3.10.2
  5. How many ice detection probes are there, and where are they located? 
    • Two probes are located on the forward fuselage 

    FCOM, VOL 2; 3.20.1
  6. If the engine bleed air valve is closed, and nacelle anti-­‐ice is commanded, what is the source of bleed air for nacelle anti-­‐ice?
    • IP bleed only (HP bleed valve remains closed) 

    FCOM, VOL 2; 3.20.1
  7. Is wing anti-­‐ice effective with the leading edge flaps extended?
    • No, wing anti-­‐ice is ineffective when the LEF are not retracted. 

    FCOM, VOL 2; 3.20.2
  8.  Can you operate the wing anti –ice system on the ground?
    • No, on the ground, WAI system is inhibited 

    FCOM, VOL 2; 3.10.3
  9. What part of the engine and wing are heated with NAI and WAI?
    • • Nacelle inlets
    • • Wing leading edges 

    FCOM, VOL 2; 3.20.1 
  10. What is displayed on primary EICAS when the nacelle anti-­‐ice and/or the wing anti-­‐ice valve is open?
    • "NAI" for nacelle anti-­‐ice; and "WAI" for wing anti-­‐ice.

    FCOM, VOL 2; 3.20.1; 3.20.2 241.
  11. Describe flight deck window heating systems.
    • • Flight deck windows are electrically heated
    • • Forward windshields have anti-­‐ice protection on the exterior surfaces
    • • Forward windshields have anti-­‐fogging on the interior surfaces.
    • • Side windows have controlled anti-­‐fogging heating on the interior surfaces 

    FCOM, VOL 2; 3.20.2 242.
  12. What windows’ heating system is controlled by the window heat switches?
    • Forward windshields only

    FCOM, VOL 2; 3.30.2 243.
  13. Since the forward windshields are controlled by the window heat switches, how do we heat the side windows?
    •  • Side window heating is automatic.
    • • No flight deck controls are provided
    • • System is powered whenever the AC electrical system is powered.

    FCOM, VOL 2; 3.20.2 244.
  14. How many pitot-­‐static probes are provided, and when are they heated?
    • 4 pitot-­‐static probes, electrically heated when any engine is operating. 

    FCOM, VOL 2, 3.20.2 245.
  15. How many angle of attack probes are provided, and when are they heated?
    • 2 angle of attack probes are heated when any engine is operating. 

    FCOM, VOL 2; 3.20.2
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