Ice & Rain Protection

Question 1

What are the components of the Ice & Rain Protection System?

Answer 1

Wing Anti-Ice System
Engine Anti-Ice System
Windshield Heating
Windshield Wipers
ADSP & TAT Heating System

Question 2

When does the Wing Anti-Ice System test itself?

Answer 2

10,000ft AGL or 10 mins after takeoff, whichever occurs first

Question 3

What happens during the Wing Anti-Ice System Test?

Answer 3

Slat Anti-Ice Valves are OPENED
A-I WING VLV OPEN EICAS Message

Question 4

How long does the Wing Anti-Ice System Test Last?

Answer 4

60 seconds (Max)

Question 5

What EICAS Message will be displayed if a failure occurs during the Wing Anti-Ice System Test?

Answer 5

A-I WING FAIL

Question 6

How many windscreen wipers are there and how are they controlled?

Answer 6

2, controlled via dedicated knobs on the overhead panel

Question 7

For what 2 purposes are the Windshields heated?

Answer 7

Anti-Icing & De-Fogging

Question 8

How many Electrical Sources are required to fully & normally operate the Windshield Heating System?

Answer 8

At least 2 AC Electrical Sources

Question 9

How is the Windshield Heating System Normally Operated?

Answer 9

Automatically

Windshield Heating Buttons 1 & 2 on the Overhead Panel remain Pushed IN allowing the system to automatically control the windshield temperature

Question 10

If only 1 AC Electrical Source is available in Flight, which Windshield is heated?

Answer 10

Left Windshield

Question 11

What will happen if you only have 1 AC Electrical Source and the Left Windshield System has failed?

Answer 11

Right Windshield Heating becomes available

Question 12

What is an ADSP and how many are there?

Answer 12

Air Data Smart Probe
x 4

Question 13

What comprises the ADSP/TAT Heating System?

Answer 13

4 x ADSP
2 X TAT

Question 14

Where are the ADSP & TAT Probes Located?

Answer 14

On the Aircraft Nose

Question 15

What are the features of the ADSP/TAT Probes?

Answer 15

Fully Automatic
Each with a dedicated heater

Question 16

When are the ADSPs heated?

Answer 16

Whenever an engine is running
OR
IN FLIGHT

Question 17

When are the TATs heated?

Answer 17

When OAT below 10°C with engines running
OR
Airspeed above 50kts
OR
IN FLIGHT

Question 18

When is TAT Probe heating disabled?

Answer 18

Airspeed below 45kts

Question 19

When batteries are the only electrical source, which ADSP will be heated?

Answer 19

ADSP 3

Question 20

What is the normal position for the ADSP Heater Button?

Answer 20

Pushed OUT

Question 21

How can the ADSP System Logic be overridden?

Answer 21

Manually, by pushing IN the ADSP Heater Button

Question 22

What happens when the ADSP Heater Button is pushed IN?

Answer 22

Manual Override of the System Logic, allowing for heating of the ADSPs on GROUND

Question 23

What happens to the Engine Anti-Ice Valve if Electrical Power is lost?

Answer 23

Fail Safe Open

Question 24

Which part of the wings are heated/can be de-iced?

Answer 24

Outboard Leading Edges (2,3,4)

Question 25

How are the Wing Leading Edges Heated?

Answer 25

Via Bleed Air from the Respective Engine

Question 26

Can the APU Supply bleed air for Anti-icing?

Answer 26

No

Question 27

How many Ice Detectors are there?

Answer 27

2, located on the Left & Right side of the nose

Question 28

What would happen to the Wing Anti-Ice System if an Engine Fire Handle is Pulled?

Answer 28

Anti-Ice Protection would be lost, as pulling the Fire Handle closes the Crossbleed Shutoff Valve

Question 29

When are the Wing & Engine Anti-ice Valves commanded open?

Answer 29

If an Icing Condition is detected IN FLIGHT

Question 30

What happens if an icing Condition is detected IN FLIGHT?

Answer 30

The Ice Detectors command the wing and engine anti-ice valves OPEN Remain Activated for 2 minutes after the icing condition is no longer detected

Question 31

How long do the wing and Engine Anti-Ice Valves stay Open after an Icing Condition is detected IN FLIGHT?

Answer 31

Until 2 minutes after the icing condition is no longer detected

Question 32

What happens if 1 Ice Detector fails?

Answer 32

Nothing, system operates automatically/normally, but redundancy is lost

Question 33

What happens if both Ice Detectors fail?

Answer 33

Anti-Ice System must be operated manually

Question 34

What must be done before taking off in Icing Conditions?

Answer 34

The FADEC must be configured via the MCDU

Question 35

Ice is detected. With ENG selected on the T/O data set page, and AUTO selected on the Mode Selector, when will the WING Anti-Ice System come on?

Answer 35

At the end of the takeoff phase - 1700ft AGL or 2 minutes after takeoff, whichever occurs first

Question 36

With ENG selected on the T/O data set page, and AUTO selected on the Mode Selector, when will the Engine Anti-Ice come on?

Answer 36

The Engine Anti-Ice Valve will be OPENED after Engine Start

Question 37

When will the Engine & Wing Anti-Ice Valves Open?

Answer 37

If Ice is detected

Question 38

What happens when a Bleed Source fails in the Wing Anti-Ice System?

Answer 38

The System Automatically opens the Crossbleed Valve and uses the opposite bleed for both wings.

Question 39

Operation of Anti-Ice Valves during takeoff affects what?

Answer 39

Engine Performance

Question 40

What is the purpose of the REF A/I Modes set on the MCDU?

Answer 40

They inhibit the Anti-Ice System Logic during takeoff until 1700ft AGL or 2 mins after takeoff, whichever occurs first

Question 41

What does the Engine and Wing Anti-Ice System use as a heat source?

Answer 41

Bleed Air from the Engines

Question 42

What is meant by the undetected envelope Anti-Ice logic?

Answer 42

During specific conditions the Wing Anti-Ice System will be activated regardless of Icing conditions being present ICE CONDITION EICAS Message will not display

Question 43

Even though not in icing conditions, when will the Wing Anti-Ice System activate?

Answer 43

When for 2 minutes all of the following occur: IN FLIGHT Altitude BELOW 22,000ft Combination of Air Temp, Alt & Speed Indicators Airspeed between 150kts - 320kts VS between -200ft/min and +200ft/min

Question 44

How are Engine Cowls heated?

Answer 44

With Air from the Low Stage Bleed of the respective Engine

Question 45

How many Engine Anti-Icing Systems are there?

Answer 45

2 - each Engine has an Independent Anti-ice System

Question 46

What happens when the Ice Protection Mode Knob is ON

Answer 46

The System is activated regardless of Icing Conditions

Question 47

What does a WHITE Flow Line Indicate on the MFD Synoptic Page?

Answer 47

The flow line is not pressurised

Question 48

What does an AMBER Flow Line Indicate on the MFD Synoptic Page?

Answer 48

The flow line is overheated

Question 49

What does an AMBER/WHITE Dashed Flow Line Indicate on the MFD Synoptic Page?

Answer 49

The flow line pressure is undetermined