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Allegiant A320 - Ice & Rain Protection
Terms in this set (29)
Is the engine anti-ice part of the normal pneumatic system?
No. It is a separate, independent system.
Where is engine anti-ice provided?
The leading edge of the engine nacelle.
What do the engine anti-ice valves do in the event of no bleed air supply?
What do the engine anti-ice valves do in the event of AC power loss?
They automatically open
When the ANTI ICE ENG pb is selected ON, does the continuous ignition automatically activate or is the crew required to turn it on?
It automatically activates
When do you use engine anti-ice?
1. When OAT (ground) / TAT (flight) is 10 C or below with visible moisture. Excluding climbs and cruise with temperatures below -40 C SAT.
2. Prior to and during a descent in icing conditions (including temperatures below -40 C SAT).
With both engine bleed valves closed, is engine anti-ice still operational?
Yes. Independent system.
What should you do if you suspect there maybe engine ice or there is significant engine vibration on the ground due to ice?
Increase N1 to 70% for a min of 15 seconds prior to selecting a higher thrust setting.
Which sections of the wing are protected by the wing anti-ice system?
The three outermost slats
There is a single ANTI ICE WING pb in the flight deck. How many wing anti-ice valves does this push button control?
Two wing anti-ice valves
What happens if a leak is detected in the wing anti-ice system?
The respective wing anti-ice valve closes automatically.
What do the wing anti-ice valves do with the loss of electrical power?
They automatically close
In the emergency electrical configuration on the A320 (not the A319), when will the wing anti-ice valves automatically close?
When the landing gear is lowered.
The wing anti-ice valves are displayed on which ECAM systems page?
Green arrows on the ECAM BLEED Systems page when the valves are open. Amber arrow when there is a fault.
What happens when the wing anti-ice system is selected ON on the ground?
The wing anti-ice valves cycle open for a short 30 second test and then close. "ON" is illuminated in the ANTI ICE WING pb until deselected by the pilot.
What do the wing anti-ice valves do after landing?
They automatically close
Can you use APU bleed air for wing anti-ice?
No. The APU bleed temperature is unregulated and thus could damage the wing slats if used for anti-ice.
Which probes and ports are electrically heated to provide anti-icing?
1. pitot tubes
2. static ports
3. total air temperature (TAT) probes
4. angle of attack (AOA) probes
When are the probes heated automatically?
When at least one engine is running on the ground, or when the aircraft is in flight.
Can the probe heat be manually selected on?
Yes with the PROBE/WINDOW HEAT pb
Which probes are not heated on the ground?
The TAT probes
Which probes are only heated to a low level on the ground?
The pitot tubes.
How are the flight deck windshields heated?
They are electrically heated to provide anti-ice and anti-fog protection.
When are the windshields automatically heated?
On the ground with at least one engine running
Can the windshields heat be manually selected ON prior to engine start?
Yes, by selecting the PROBE/WINDOW HEAT pb ON.
Windshield heat temperature control is automatic. Explain.
On the ground the temperature will automatically be set to a low heat level. In flight it is set to a high heat level.
What is the purpose of the Structural Ice Indicator?
With the accumulation of ice on the indicator, it can be assumed that ice is also accumulating on the other exterior surfaces as well.
How can the ice indicator be seen in low light conditions?
By turning on the ICE IND & STBY COMPASS light switch.
Are there any precautions for extended flight in icing conditions with the slats extended?
Yes. Avoid it. Wing anti-ice capability is reduced with the slats extended.
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