Ice and Rain Protection

Question 1

How many wing anti ice schedules are there?

Answer 1

Two, low for slats retracted and high for slats extended

Question 2

In the event of an engine failure, there will be no way to provide air to the respective wing for ice protection

Answer 2

False, use the wing anti-ice cross bleed selector knob to route air from the good engine to both wings.

Question 3

What is the maximum speed for the operation of the windshield wipers?

Answer 3

250 KIAS

Question 4

If ice is detected on one of the ice detector probes, the respective ice protection systems will automatically be activated

Answer 4

FALSE

Question 5

When are the probes automatically heated?

Answer 5

When one engine is started and its generator comes on line

Question 6

What will be seen on the N2 gauges when the wing anti ice system is activated

Answer 6

The arc will turn white up to 77% to indicate power setting that may be required for adequate ice protection.

Question 7

What happens if a Cowl Anti Icing duct ruptures?

Answer 7

The escaping pressurized bleed air is contained inside the outer duct

Question 8

If the pilot selects the HI position of the windshield heat switch, additional heat will be applied to all four aircraft cockpit windows

Answer 8

FALSE. Only the windshields are heated at the higher level.

Question 9

The FAST position of the window wipers will always override any other position selected

Answer 9

FALSE. The last position selected by either pilot will control both wipers.

whoever moved the switch last will have control of the speed for both wipers

Question 10

What occurs when the wing anti-icing switch is selected ON?

Answer 10

The modulating SOVs will vary their position based on commands from the dual-channel AILC computer, and will maintain a hotter temperature schedule if the slats are extended

Question 11

Are the vertical and horizontal stabilizers provided with anti ice protection?

Answer 11

No. it is not required tests have shown no significant ice can form there.

Question 12

which engine bleed air stage does the anti ice air come from?

Answer 12

the 10th stage

Question 13

Can the APU bleed provide anti ice protection?

Answer 13

No

Question 14

how are the windshields protected from ice?

Answer 14

they are electrically heated

Question 15

which position is the windshield heat normally in?

Answer 15

LOW

Question 16

are the wings protected from getting too hot? and if so how?

Answer 16

yes the anti ice leak controller (AILC) monitors wing temperature and regulates the anti ice valves to maintain the appropriate temperature

Question 17

Can one bleed provide air to both wings?

Answer 17

Yes by opening the WING A/I CROSS BLEED selector to the desired side.

Question 18

When is the ice detector test accomplished?

Answer 18

on the first flight of the day

Question 19

What do the PROBES switches do in flight?

Answer 19

NOTHING, in flight all probes are fully powered regardless of switch position

Question 20

When should the WING A/I CROSS BLEED rotary selector be turned?

Answer 20

During a bleed leak condition or an engine failure as directed by the QRH

Question 21

Which Pilots WIPER switch is controlling?

Answer 21

the last one moved

Question 22

Define ground and icing conditions

Answer 22

Ground icing: OAT 10 or less with visible moisture

Flight icing: TAT 10 or less until -40 SAT while flying through visible moisture such as clouds, rain, snow, sleet or ice crystals

Question 23

When should cowl anti ice be turned on while on the ground?

Answer 23

during ground icing conditions or while taxiing on a contaminated surface

Question 24

When should wing anti ice be turned on while on ground?

Answer 24

Only for takeoff when OAT is 5 or less with visible moisture

Question 25

What exceptions are made when type II or IV fluid have been applied to wings?

Answer 25

only activate wing anti ice just prior to advancing thrust levers for takeoff

Question 26

When should cowl anti ice be turned on in flight?

Answer 26

when flight in icing conditions or when ICE message is displayed

Question 27

When should the wing anti ice be turned on in flight?

Answer 27

When ICE is annunciated by the ice detection system or while flying in icing conditions with an airspeed of less than 230KIAS