Ice Protection

Question 1

What uses bleed air for ice protection?

Answer 1

Outboard slats, engine cowls

Question 2

What components are electrically heated?

Answer 2

ADSP, Windshields, TAT probles, water lines, static port.

Question 3

Can the APU be used as a bleed source for anti Ice?

Answer 3

No

Question 4

What is heated at engine start?

Answer 4

ADSP, TAT probes, Static port waterlines and windshields

Question 5

If an engine fails, how is the respective side wing heated?

Answer 5

The Crossbleed valve automatically opens to heat the wing

Question 6

If an engine fails, does the respective side receive anti ice protection?

Answer 6

No

Question 7

How long does the anti ice system stay on if Ice is NOT detected?

Answer 7

2 or 5 mins depending on the epic load

Question 8

Can the pilot override Anti ice system?

Answer 8

Yes

Question 9

How can the pilot Override the Anti ice system?

Answer 9

turning the Ice protection Knob to ON

Question 10

How many Ice detectors does the system Have?

Answer 10

2

Question 11

how could a pilot tell if the aircraft was picking up ice?

Answer 11

Look at the Windshield wipers, they are not heated

Question 12

In an electrical emergency, will the Ice protection still function?

Answer 12

YES, the bleed valves are fail safe open so they would stay on.

Question 13

If ice protection is selected OFF in MCDU TO/DATA will the Ice protection still function?

Answer 13

Yes but not until above 1700ft or 2 mins after liftoff

Question 14

Why is it important to turn the TO/DATA set menu to ALL when in Icing?

Answer 14

so that the Engine cowlings have ice protection immediately (preventing any ice from forming that could get sucked into engine)

Question 15

when TO/DATA set is set to ALL when will engines receive Anti Ice protection?

Answer 15

as soon as engines are started.

Question 16

When will the wings (slats) be heated if TO/DATA is set to ALL?

Answer 16

40kts groundspeed or 1700 AFE

Question 17

When would TO/DATA set menu be set to ALL?

Answer 17

10 C or less when visible moisture or ground contaminated or icing conditions expected to exist below 1700 AFE

Question 18

When would pilot select ENG in TO/DATA set?

Answer 18

Never

Question 19

When would wings be heated on the ground?

Answer 19

Wheelspeed greater than 40kts

Question 20

When would pilot select OFF in TO/DATA set?

Answer 20

no icing conditions exist and above 10C

Question 21

After clearing the runway upon landing, when would Anti Ice be positioned to ON?

Answer 21

As soon as possible after clearing runway. If in icing conditions

Question 22

What happens to the windshield wiper if operated on a dry glass?

Answer 22

It will stop.

Question 23

how would you move a parked windshield wiper?

Answer 23

while on ground use water on windshield
can try turning wiper off then back on

Question 24

Maximum speed to use the windshield wiper?

Answer 24

250 kts

Question 25

maximum speeds for unparked windshield wiper?

Answer 25

VMO MMO

Question 26

Icing condition exist when:

Answer 26

Temp 10C SAT (ground) TAT (flight)or lower when visible moisture of any kind or contaminated surfaces.

Question 27

When passing thru 10,000 ft after takeoff, you see EICAS A-I WING VLV OPEN; why?

Answer 27

The wing Anti Ice system is testing itself.

Question 28

Can pilots test Anti ice system?

Answer 28

NO

Question 29

Is there a test for the Anti Ice system?

Answer 29

YES

Question 30

What are the tests for the anti ice?

Answer 30

self test - thru 10,000 ft
maintenance test -knob