A220-Anti-ice & Rain Protection

Question 1

Bleed air provides anti-ice protection to which parts of the aircraft?

Answer 1

• Wing Leading Edges (slats 2, 3, and 4)

* Engine Cowls

Question 2

Electrical power provides anti-ice protection to which parts of the aircraft?

Answer 2

• The Windshields
• Side Windows
• Air Data Probes & Sensors

Question 3

What areas of the aircraft do not incorporate anti-ice protection?

Answer 3

• The wing leading edge slats located directly inboard and outboard of the engine
• The vertical and horizontal stabilizers
• *Ice accumulation is not considered detrimental in these areas.

Question 4

What happens when the L/R COWL rotary switch is selected to the ON position?

Answer 4

The cowl anti-ice valve is commanded open regardless of ice detection, as long as the OAT is 15 degrees Celsius or less.

Question 5

What happens when the WING rotary switch is selected to the ON position?

Answer 5

The wing ant-ice valves are commanded open regardless of ice detection, as long as the airspeed is 60 knots or greater.

Question 6

The AUTO mode is inhibited on the ground. When airborne when will the AUTO mode activate in icing conditions?

Answer 6

During takeoff in AUTO, the cowl and wing anti-ice systems will not activate until 1,500 feet AGL or 2 minutes after takeoff whichever occurs first.

Question 7

When will the PROBE HEAT operate automatically?

Answer 7

The Total Air Temperature (TAT), Angle of Attack (AOA), and Air Data System Probe (ADSP) heaters will operate automatically when an engine is running.

Question 8

What occurs when the extinguished PROBE HEAT switch light is pressed?

Answer 8

• The GND ON switch light message will illuminate.
• The TAT and ADSP will be powered for 2 minutes.

** The AOA sensor is not 
heated with this function. 
**The aircraft must be on 
the ground and powered by 
the APU or GPU for 
this function to operate.