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+4)+"@## > 900 Ice And Rain Protection > Flashcards

900 Ice And Rain Protection Flashcards

1
Q

The wing cross bleed valve fails?

A

In last known position

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2
Q

Wing anti-ice Valves fail?

A

Closed

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3
Q

T2 probe provides?

A

Temperature data to theFADEC

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4
Q

FADEC uses T2 info to?

A

Set engine power and control the VG vanes

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5
Q

T2 heater function testing?

A

After right engine shutdown

Electrical power maintained on aircraft for at least one minute

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6
Q

During icing conditions The ice detectors are electrically deiced??

A

For 5 seconds every 60 seconds

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7
Q

What stage bleed air is used for wing anti-ice

A

10th stage engine bleed air

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8
Q

How is hot bleed air supplied to the wing?

A

Through ducting and released through piccolo tubes

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9
Q

Cowl anti ice valves?

? Controlled

? Operated

A

Electrically controlled

Pneumatically operated

Failsafe open

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10
Q

How many air data sensing heater controllers?

A

3

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11
Q

On the ground are the probes heated?

A

On ground
Either Gen operative
Probe switches off

L/R/stby pitots heated half power
__________________________________

Probes on? All powered excpt TAT
(Static ports,base heaters,AOA , pitots)

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12
Q

Probes switches in flight?

A

Full power regardless of switch position

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13
Q

Which side is the TAT probe on?

A

Right side

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14
Q

Windshield switches on high?

A

Windshields on high

Side windows low

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15
Q

When both wiper switches are in use which switch selection will determine the speed of both wipers?

A

The last switch selection

12-23 ch 12 Ice and rain protection

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16
Q

Cowls fail?

A

Open

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17
Q

How many probes need to detect icing to send an icing signal?

A

Just one probe

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18
Q

L/R PRSOV FAIL??

A

Closed

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19
Q

Wing anti-ice valves on the synoptics page show________valve position

A

Actual

They show the actual valve position

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20
Q

Wing anti-ice valves fail?

A

Closed

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21
Q

Wing overheat signal is generated by?

A

DCU

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22
Q

Cowl anti-ice valves fail?

A

Open

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23
Q

What monitors heating for air data probes and sensors?

A

3 ADSHC

Air data sensor heater controllers

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24
Q

On the ground which air data probes and sensors are not heated?

A

L/R pitot probe base

TAT

25
Q

Windshield wiper limitation?

A

250 knts

26
Q

How many ice detector signals are needed to generate the ice caution message?

A

1

27
Q

How do the ice detectors detect ice?

A

The high frequency vibration decreases as ice is accumulated

28
Q

How many channels does the AILC have?

A

2

Channel A and B

One actively managers while the other maintains a standby roll

Switched on a daily basis

29
Q

Is there an EICAS ind of active AILC CHANNEL?

A

No

30
Q

The wing anti-ice valves are spring loaded to what position?

A

Spring loaded to the closed position

31
Q

The wing anti-ice valves will close when?

A

Bleed air pressure is removed

Loss of electrical power at the valve

Anti-ice duct failure detected by AILC

APU Is manually selected as the bleed source

32
Q

What happens to the wing anti-ice valves if APU is manually selected as the bleed source?

A

The valves will close if selected on

33
Q

The wing anti-icing ducts are also referred to as?

A

Piccolo tubes

34
Q

The wing cross bleed valve is an _________ operated valve

A

The wing cross bleed valve is on Electrically operated valve

35
Q

The white arcs for wing anti-ice on the N 2 gages indicate

A

Switch position

36
Q

Cowl valves are fail safe______?

A

Cowl valves are fail safe OPEN

37
Q

Cowl anti icing valves require 2 things to close

A

Air pressure

Electrical power

38
Q

What provides control and monitoring of the probe heaters

A

Three separate air data sensor heater controller’s ADSCs

39
Q

How many heaters in the pitot static probe?

A

2

One in the bass and one in the head

40
Q

When does the pitot heater operate at full?

A

In flight only!!

1/2 pwr in grnd

41
Q

When does the pitot base heater operate?

A

In flight ONLY

42
Q

Standby pitot probe heated?

On gnd?

In flight??

A

Have power on the ground

Full power and flight

43
Q

Statics ports?

A

Heated to full power when energized

44
Q

AOA VANES?

A

Heated to full power when energized

45
Q

TAT operates when?

A

Only in flight at full heat

46
Q

What mode is used for the De misting and De fogging of the windshield and side window?

A

LOW MODE

47
Q

When both wiper switches are in Use ? which switch selection will determine the speed of both wipers?

A

The last switch selection

12-23 ch23 Ice and rain protection6/11/20

48
Q

Maximum airspeed with wipers?

A

250kias

49
Q

?What heats the T2 probe

A

Pneumatics from the engine bleed air source

50
Q

Whindshield heat off when?

A

30 degrees

51
Q

The white arc on the n2 gauge

Goes from 0 to ?

A

0-77%n2

52
Q

Where is the TAT probe?

A

Right side of aircraft

53
Q

Which operate on a two temperature schedule? Windshields or side windows?

A

Windshields

54
Q

Are the side windows operated on a one temperature schedule only?

A

Yes

55
Q

The wing xbleed valve is ______contrld?

A

Electrically controlled

56
Q

The range of the white arc

When wing anti-ice selected on

A

0 to 77%

57
Q

Where are the Cowl anti-ice valves located?

A

In the aft equipment be

58
Q

The wing anti-ice system is automatically controlled by

A

The AILC

anti-ice and leak detection controller

+4)+"@## (19 decks)

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