Ice And Rain Protection

Question 1

What does the ice and rain protection system include?

Answer 1

• wing anti ice
• engine anti ice
• windshield heating
• ADSP/TAT heating
• windshield wipers

Question 2

Where is the source of the air used for engine anti ice?

Answer 2

Bleed air from the low stage bleed

Question 3

What happens to the engine anti ice valve when an electrical or pressure signal is not sensed?

Answer 3

It automatically fails open

Question 4

Which slats are heated by bleed air?

Answer 4

The 3 outboard slats of each wing

Question 5

Can the APU supply bleed air for the anti ice system?

Answer 5

No

Question 6

When ice is detected by the ice detectors how long will the wing and engine anti ice valves remain open and activated for?

Answer 6

Until 5 mins after the icing condition is no longer detected

Question 7

What happens if one ice detector fails?

Answer 7

The system works as normal but there is now no redundancy

Question 8

What happens to the anti ice system if both ice detectors fail?

Answer 8

The anti ice system can only be operated in manual mode

Question 9

At what temperatures should the MCDU REF A/I be set to ENG?

Answer 9

5-10 Celsius

Question 10

At what temperatures should the MCDU REF A/I be set to ALL?

Answer 10

Below 5 Celsius

Question 11

In case of only a single AC source in flight which windshield is heated?

Answer 11

Left windshield

Question 12

If the left windshield heating system fails when only one AC source is available what happens?

Answer 12

The right windshield heating system becomes available

Question 13

When are the ADSPs heated?

Answer 13

Whenever the aircraft is airborne or an engine is running

Question 14

Which ADSP will be heated when only battery power is available?

Answer 14

ADSP 3

Question 15

When does the wing anti ice test occur?

Answer 15

Upon reaching 10,000ft or 10 mins after takeoff (whichever comes first)