Ice And Rain Protection Flashcards
What sub-systems does ice and rain protection include?
– Wing and horizontal stabilizer anti-ice system;
– Engine ice protection system;
– Air data smart probe (ADSP)/TAT heating system;
– Windshield heating system;
– Windshield rain protection system.
When may ice conditions exist?
When OAT on the ground or TAT inflight is 10° C or below and visible moisture is present.
Where can performance data/limits for operations in icing conditions be found?
In the performance section and/or OPERA.
When can the ICE SPEED RESET position on the ICE PROTECTION panel be selected?
Only when the crew is certain that there is no ice accretion on the airplane.
What does the ICE SPEED RESET position on the ICE PROTECTION panel do?
It resets the stall protection to non-icing condition settings and removes the STALL PROT ICE SPEED CAS message.
When is the APU icon and associated flow line on the ICE PROTECTION synoptic page displayed?
On the ground only.
Can the APU bleed be used as a bleed source for ice protection?
No, except for ground tests.
How does the Engine Anti-ice system protect the engine air inlets from ice formation?
By extracting hot air from the engines.
How does the Wing and Stabilizer Anti-ice system protect the wing and stabilizer leading edges from ice formation?
Hot pneumatic air ducted to the leading edges.
How can the Wing and Horizontal Stabilizer Ice Protection systems test be initiated?
By pressing the TEST button on the ICE PROT panel.
How many ice detectors are on the airplane and where are they located?
Two; left and right side of the nose section.
How does the Windshield Heating System (WHS) protect the windshield from ice and fog formation?
Electrical power to heat the windshield.
When will the WHS operate in a power saving mode?
If the airplane system is fed by a single DC source.
Does the WHS operate if the system is fed by battery power?
No.
How are the ADSP/TAT probes heated?
Electrically.
Will the Anti-ice system monitor icing conditions and automatically activate in all flight phases?
Yes.
Whenever the XBLEED is closed and the right bleed source is not available, the Anti-ice system is in …
Single bleed operation.
What is the maximum operating altitude for anti-ice single bleed operation?
20,000 ft.
Whenever the XBLEED is closed and the left bleed source is not available, the anti-ice system is …
Inoperative.
List the three ICE PROTECTION MODE knob settings/temperatures for takeoff?
ENG - Between 5° C and 10° C with visible moisture
ALL - Below 5° C with visible moisture
AUTO - All other conditions with or without visible moisture
If the MODE knob is in ALL for takeoff, when will the white A-I WINGSTAB ARMED message go to white A-I WINGSTAB ON?
– TLA is advanced (above 59°); and
– Wheel speed is greater than 30 kt.
When the MODE knob is in the AUTO position and the ice detector recognizes the icing conditions, at what point will the ice protection system be activated in flight?
Above 1,700 ft AGL or 2 minutes in the air, whichever occurs first.
When will the wing and stabilizer anti-ice system automatically be turned off after the airplane leaves icing conditions?
2 minutes after ice is no longer detected.
