ICE Systems Flashcards
Icing conditions exist on the ground and for takeoff when the _________, and ______________ or while operating on ramps, taxiways, or runways where snow, standing water, or slush may be ingested by the engines or freeze on the engines, nacelles, or engine sensor probes.
Outside air temperature 10° C or below ; visible moisture in any form is present (i.e., clouds, fog/mist with visibility of 1 mile or less, rain, snow, sleet, or ice crystals),
Icing conditions exist in flight when the ______________ or less, and _______________.
Total air temperature 10° C or below; Visible moisture in any form is present (i.e., clouds, fog/mist with visibility of 1 mile or less, rain, snow, sleet, or ice crystals).
Engine ignition must be selected to _____ prior to and during engine anti-ice operation.
CONT
Window heat must be ON _______ before takeoff.
10 min
Probe heat must be ____________.
ON before takeoff
Which flight deck windows are not electrically heated?
L3 and R3
Temperature controllers maintain window heat on ________ at the correct
temperature to ensure maximum strength of the windows in the event of bird
impact.
No. 1 and No. 2
On the Window Heat Panel, when an overheat condition is detected, power is removed from the window, __________, and the green ON light extinguishes.
an amber OVERHEAT Light is illuminated
On the Window Heat Panel when a green window heat ON light is illuminated, ___________.
window heat is being applied to selected window(s).
Placing the WINDOW HEAT Test Switch to OVHT_______________.
simulates an overheat condition and all OVERHEAT lights illuminate
Placing the WINDOW HEAT Test Switch to PWR TEST_______________.
provides a confidence test.
Windshield scratching will occur if the windshield wipers are operated on
_____ windshield.
a dry
Engine bleed air thermal anti-icing prevents the formation of ice on the
_____.
engine cowl lip
Each cowl anti-ice valve is _______ controlled and ______ actuated.
electrically; pressure
What occurs when the ENG ANTI-ICE switches are positioned to ON?
All answers are correct
() Allows engine bleed air to flow through the cowl anti-ice valve for cowl lip anti-icing, and sets stick shaker logic for icing conditions.
() Adjusts stick shaker and minimum maneuver speed bars on airspeed indications. The airspeed indications return to normal when engine anti-ice is positioned OFF if wing anti-ice has not been used in flight.
If the cowl anti-ice valve fails to move to the position indicated by the ENG
ANTI-ICE switch, the COWL VALVE OPEN light ________ and an amber TAI indication illuminates on the CDS after a short delay.
remains illuminated bright blue
On the Engine Anti-Ice Panel, an amber illuminated COWL ANTI-ICE Light indicates __________.
an overpressure condition in duct downstream of engine cowl anti-ice valve
A green TAI on the upper display unit above the N1 gage, indicates __________
cowl anti-ice valve(s) open
An amber TAI on the upper display unit above the N1 gage, indicates __________
cowl anti-ice valve is not in position indicated by related engine anti-ice switch
The wing anti-ice system does not include the _______ or the_________.
leading edge flaps, outboard leading edge slats
On the ground, both of the wing anti-ice valves close if either engine thrust is above the takeoff warning setting or ____________.
either temperature sensor senses a duct over temperature
On the Wing Anti-Ice Panel, what does a bright blue Wing Anti-Ice VALVE OPEN Light indicate?
The related wing anti-ice control valve is in transit or related wing anti-ice control valve position disagrees with WING ANTI-ICE switch position
On the Probe Heat Panel, an amber CAPT PITOT light indicates ________.
the probe is not heated
What supplies conditioned air to No. 1 windows for defogging?
WINDSHIELD AIR control knob located on the forward panel
