Ice & Rain Protection Flashcards
True or False: De-icing systems are used to get rid of ice that has already formed.
True
True or False: De-icing systems are used to prevent ice from forming.
False
though de-ice can be used pre-emptively
True or False: Anti-icing systems are used to prevent ice from forming.
True
True or False: Anti-icing systems are used to get rid of ice that has already formed.
False
How many electronic ice detection probes are installed on the aircraft?
2 Piezoelectric probes.
Where are the electronic ice detection probes located on the aircraft?
Left and Right side foreward fuselage.
How much ice needs to be detected before an indication is displayed on the ED?
Either probe at any detection will display on the ED.
.5mm of clear ice
True or False: When the ice detection probes detect ice, they heat to melt the ice off.
True
When will the ICE DETECT FAIL caution light illuminate?
When both ice detector probes fail.
Failure of the one probe provides no indication, as the system is redundant.
True or False: If one ice detection probe is not working, no alert is provided.
True
What inflates the de-icing boots?
Engine Bleed Air from each engine.
Which aircraft structures do not have deicing boots that use bleed air?
…
True or False: Boot inflation is regulated by a single distributor valve.
False, t
There are 6 individual de-icing boots and 6 Dual Distributing valves.
In order for the TMU to send signals automatically, the airframe mode select switch must not be selected to which position?
Manual
How long does each de-ice boot inflate?
6 Seconds
True or False: If a malfunction occurs in the automatic timer or a leak occurs, the boots can be cycled manually.
True
When should pilots move to the next boot position when using the deicing boots in manual mode?
Once the light illuminates
True or False: The DDVs and check valves have integral heaters which are automatically activated.
True
What is the normal position for the airframe mode select switch?
Manual
True or False: If the TMU temperature monitoring detector fails, the valve heaters default to a permanent ON position to ensure they remain heated.
True