Ice & Rain Protection Flashcards
Window heat for the Capt & F/O front windows is controlled by
FWD WINDOW HEAT switches thru a Temp Controller
What does an illuminated window OVERHEAT light indicate
The respective window has overheated ; power removed from window
What does the OVHT position of the WINDOW HEAT test switch provide
Simulation of window overheat condition that illuminates all OVERHEAT light if all WINDOW HEAT switches are ON
What does an illuminated amber light on the PITOT STATIC heater panel indicate
Corresponding component not heated
How is an engine anti-ice valve controlled and operated
DC controlled & pneumatically operated
What is the source of bleed air for engine anti-ice
5th or 9th stage bleed air, prior to the engine bleed valve
What does an illuminated amber COWL ANTI-ICE light indicate(500)
Excessive pressure or temperature in duct between cowl anti-ice valve and cowl leading edge lip
Which statements correctly describe an illuminated COWL ANTI-ICE light(500)
The light indicates excessive pressure or temperature in the system, but the cowl valve does not close automatically
Which ENGINE START switch position should be selected for operating in light icing conditions
CONT
What is the source of bleed air for wing anti-ice
Pneumatic manifold air after the engine bleed valve
What occurs when the WING ANTI-ICE switch is placed to ON
AC power operates motors which open each wing anti -ice valve
What is the normal source of power for the wing anti-ice valves
Normal AC
What does a dim WING ANTI-ICE VALVE OPEN light indicate
Respective wing anti-ice control valve is open, with the switch ON
What happens when either thrust lever is moved beyond the takeoff warning threshold with wing anti-ice operating on the ground
Both wing anti-ice valves close, but the switch remains ON
On the ground prior to liftoff, with the wing anti-ice switch ON, and the thrust levers advanced to takeoff power, the WING ANTI ICE VALVE OPEN lights
Illuminate bright blue
An amber COWL ANTI-ICE light indicates
A cowl anti-ice supply duct over-temp or over-pressure condition has occurred
The WING ANTI-ICE switch trips to OFF
At liftoff
Window heat must be selected ON at least __minutes prior to takeoff
10
What is the indication when an engine anti-ice switch is turned ON but the valve fails to open
The respective blue COWL VALVE OPEN light illuminates bright blue
The green WINDOW HEAT ON lights illuminate
During a power test, or when a window heat controller is supplying power to the windows
On the ground with the throttles advanced to takeoff power and wing anti-ice selected ON, the wing anti-ice valves close
True
With the window heat switch ON, an illuminated amber window OVERHEAT light indicates an overheated window condition or a power loss to the window
True
The engine anti-ice system
Heats the engine inlet cowl
Conditions:A cold front has moved through the area, the temperature is 4C, and the skies are clear. Additionally, the ramp area and taxiways have standing water. Engine and wing anti-ice should be turned on after engine start
True
The aircraft is descending through clouds from FL290 to FL180. The SAT is -42 C. Engine anti-ice is required
True
The ATIS temperature is 9 C and a light rain is falling. After engine start, the wing and engine anti-ice should be turned on
True
Should the Window Heat POWER TEST be performed when all green ON lights are illuminated
No
The horizontal stabilizer is anti-iced by
Nothing
Will the engine anti-ice operate with that engine’s bleed valve closed
Yes
What part of the wing is heated by the wing anti-ice system(500)
Slats only
Which cockpit windows are not electrically heated by the window heat system
L3 & R3
How many slats on each wing of a 737-800 are anti-iced
3 inboard leading edge slats
When the engine anti-ice switches on a. B737-700 are turned on, what happens
COWL VALVE OPEN lights turn bright blue, the dim when they are open
Stick shaker logic is set for icing conditions
Which model 737 is not allowed to hold in icing conditions with flaps extended
7,8,9
