-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
What part of the engine and wing are heated with NAI and WAI?
- • Nacelle inlets
- • Wing leading edges
FCOM, VOL 2; 3.20.1
-
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.
-
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.
-
What windows’ heating system is controlled by the window heat switches?
• Forward windshields only
FCOM, VOL 2; 3.30.2 243.
-
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.
-
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.
-
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
|
|
