ANTI ICE AND WINDOW HEAT Flashcards
Describe what happens when nacelle anti‐ice is commanded on?
•NAI valve opens
•Selected engine igniters operate continuously
•Engine PRV opens when the NAI valve is open
FCOM 2; 3.10.2
The 747-8 EICAS msg BLD LOW TEMP indicates __?
•Engine bleed air too low for sufficient wing anti-icing
FCOM 2; 747-8; 3.20.2
Does the Nacelle Anti-Ice AUTO position function on the ground?
No, the AUTO function only works in flight
FCOM 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
How many angle of attack probes are provided, and when are they heated?
•2 angle of attack probes
•Electrically heated when any engine is operating
FCOM, VOL 2; 3.20.3
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, 3.20.3
Window heat ON switches provide both anti-icing and anti-fogging
protections to which flightdeck windows?
Forward left and right windshields only
FCOM, VOL 2; 3.10.4
On the -400, what indications are displayed, on primary EICAS,
when the nacelle anti‐ice and/or the wing anti‐ice valve is open?
•“NAI” for nacelle anti‐ice
•“WAI” for wing anti-ice
FCOM, VOL 2; 3.10.4
On the -8, what indications are displayed, on primary EICAS,
when the nacelle anti‐ice and/or the wing anti‐ice valve is open?
•“EAI” for engine nacelle anti‐ice
•“WAI” for wing anti-ice
FCOM, VOL 2; 3.10.4
Is wing antiice effective with the leading edge flaps extended?
No, wing anti‐ice is ineffective when the LEF are not retracted.
FCOM, VOL 2; 3.10.2
Can you operate the wing anti-ice system on the ground?
No, WAI system is inhibited on the ground.
FCOM, VOL 2; 3.10.3
