Ice Protection

Question 1

When do you use engine anti-ice?

Answer 1

• When OAT (ground) / TAT (flight) is 10°C or below with visible moisture present
• Prior to starting descent in icing conditions (including temps below -40°C SAT)

Question 2

What exception is there to the engine anti-ice rule?

Answer 2

Engine anti-ice not required during climb and cruise when the temperature is below -40°C SAT

Question 3

What does a FAULT light in the ENG ANTI ICE pb indicate?

Answer 3

Switch/anti-ice valve disagreement

Question 4

With the ENG ANTI ICE on what indications will you see on the pb?

Answer 4

A blue ON light

Question 5

Can you use the wing anti-ice on the ground?

Answer 5

No

Question 6

What happens if you turn the wing anti-ice on while on the ground?

Answer 6

The wing anti-icing valves will open for a 30 second test

Question 7

What part of the wing is heated?

Answer 7

Outboard 3 slats

Question 8

Can you use the APU bleed for wing anti-ice?

Answer 8

No

Question 9

What does the amber FAULT light in the WING ANTI ICE pb indicate?

Answer 9

• Switch/Valve disagreement

- Low pressure is detected

Question 10

In what position do the wing and engine anti-ice valves fail if electrical power is lost?

Answer 10

• Wing: valve close

- Engine: valve open

Question 11

Which exterior aircraft components utilize electrical heating?

Answer 11

• Cockpit windshields and sliding side windows
• AOA, TAT, pitot probes, and static ports
• Waste water drain masts

Question 12

What is the PROBE/WINDOW HEAT logic in AUTO (lights out)?

Answer 12

• When the PROBE/WINDOW HEAT pb is placed in auto, the probes and windows are heated automatically on the ground provided one engine is running or when the aircraft is in flight
• TAT not heated on the ground