Ice and Rian Protection Flashcards
Where does the bleed air comes for the boots
P3
Are the boot timer connected
No they are two independent systems
What cycle are the boots on
6 second on 54 second OFF
What Nh% do we need for the boots to work
80%
When does the cold setting get turned on for prop ice
below -10c
What oil pressure is needed fir the prop deice
40 PSI
What DC bus is pitot tube #1
EDC2
When are windshield wipers not turned on
Dry windshield
How doe the ice detection probe work
It vibrates at a specified frequency when ice begin to accumulate the frequency of vibration changes thus the ice being detected
What is the HOT 7 and when are they turned ON
Pitot static #1,#2, AUX
Slip
AOA #1,#2
TAT
Turned ON before takoff
What is turned on with the first indication of ice
Ignition #1, #2
Leading edge timer 1 or 2
Prop heat timer 1 or 2
Engine air inlets
Windshield heat
Icing with 25 degrees of flaps what is Vref
Vref +10
Icing with 45 degrees of flaps what is Vref
Vref +5
What is the timer cycle for engine inlet boots
6 seconds ON 174 seconds OFF
Prop timer cycle
Cold 20 second ON 60 seconds OFF
Norm 10 seconds ON 60 seconds OFF
Windshield overheat temp
54°C
Low speed Alarm
Airspeed drops blow 160 knots
Flaps are set to UP (zero position)
Either the ice detector has been activated or the leading edge deice boots have been turned ON
What prevents moisture form entering tubing or deicer
A water separator
Dicer boots are operated by pneumatic airflow through
Six ejector control valves
Leading edge deicing is controlled by
Two timers
Propeller deice is accomplished by
Electric heat
The propeller deice system is protected from damage during ground operation by
Low oil presure switch
The windshield system heats the windshield to approximately
40-45°C
Should any segment of the anti-ice system fail the plot will be alerted by a
Amber light
