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Republic Airways > Ice and Rain Protection > Flashcards

Ice and Rain Protection Flashcards

1
Q

The aircraft’s electrical system is used to heat (5):

A

Flight deck windshields, Air Data Smart Probes, TAT probes, water lines, static port

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2
Q

What uses bleed air for ice protection?

A

Engine cowls, three outboard slats

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3
Q

What part of the engine is heated?

A

Only the engine cowls are anti-iced.

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4
Q

What control surfaces are heated by the wing anti ice system?

A

3 outboard slats

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5
Q

Can the APU be used to provide bleed air for the anti-ice system?

A

No.

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6
Q

What happens if there is a single bleed source failure?

A

The crossbleed automatically opens and uses opposite bleed for both wings.

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7
Q

When in flight with a single AC source available, the ________ windshield will be heated.

A

Only the left.

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8
Q

In flight with a single AC source available, the ___________ windshield will be heated if the left fails.

A

Right.

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9
Q

Sources for aircraft anti-icing are:

A

Bleed air and electric

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10
Q

Which panels on the wing do not have ice protection?

A

Inboard slats, flaps and spoilers

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11
Q

What uses electrical power to prevent icing?

A

ADSPs, TAT probes, windshield, static port, water lines

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12
Q

What is heated at engine start?

A

ADS probes, TAT probes, water lines and static port

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13
Q

If an engine fails, does the opposite wing receive ice protection?

A

Yes, the crossbleed valve opens and uses opposite bleed for both wings.

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14
Q

If an engine fails, does the respective engine receive icing protection?

A

No, the failed engine does not receive heat to the engine cowl.

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15
Q

How long will the engine and wing anti-ice system remain on after icing is no longer detected?

A

2 or 5 minutes (epic load dependent).

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16
Q

Is the ice protection system automatic?

A

Yes, under normal conditions.

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17
Q

Can the pilot override the automatic ice protection system?

A

Yes, by selecting the ICE PROTECTION selector knob to ON.

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18
Q

How many ice detectors does the aircraft have?

A

2

19
Q

If any ice accumulation is detected or suspected, and the ice detection system is not activating, what should the pilot do?

A

Manually activate the system by selecting the ice protection mode selector knob to ON.

20
Q

How can a pilot tell if the aircraft is picking up ice in flight?

A

Look at the wipers and around the windshield.

21
Q

What happens to the engine anti-ice valve with the loss of electrical power?

A

The engine anti-ice valve is fail-safe open.

22
Q

Where do we set engine anti-ice for takeoff?

A

MCDU T/O DATASET menu

23
Q

For takeoff, anti-ice on the MCDU T/O DATASET is set to OFF, and the mode selector knob is set to AUTO. Will the anti-ice system turn on if icing conditions are encountered on the takeoff roll?

A

Not until 1700 AFE or 2 minutes after takeoff, whichever comes first.

24
Q

What does selecting ALL on the T/O DATASET menu provide for the engine, and how long does the protection last if no ice is detected with the ice mode selector knob set to AUTO?

A

Engine cowl is heated when the engine is running and turns off at 1700 feet AFE or 2 minutes after takeoff, whichever comes first.

25
Q

What does selecting ALL on the T/O DATASET menu provide for the wings, and how long does the protection last if no ice is detected with the ice mode selector knob set to AUTO?

A

Three outboard slats are heated at a wheelspeed of 40 knots, and turns off at 1700 feet AFE or 2 minutes after takeoff, whichever comes first.

26
Q

With the Ice Detection mode selector knob set to AUTO and the T/O DATASET REF A/I set to OFF, the wing and engine anti-ice is inhibited until when?

A

Until 1700 feet AFE or 2 minutes after takeoff, whichever comes first.

27
Q

When would the pilot select ALL on the MCDU DATASET REF A/I MENU?

A

On the ground during taxi and takeoff when SAT is below 10°C or below and icing conditions exist or are anticipated to be encountered below 1700 AFE.

28
Q

When would the pilot select ENG on the MCDU DATASET REF A/I MENU?

A

Never.

29
Q

When would the pilot select OFF on the MCDU DATASET REF A/I MENU?

A

No icing conditions present.

30
Q

When are wings heated on the ground?

A

If the MCDU DATASET REF A/I MENU is set to ALL and the wheelspeed is greater than 40 knots.

31
Q

With ice detection mode selector knob set to ON, when will the engine anti-ice operate?

A

Whenever the respective engine is running.

32
Q

In icing conditions, what is the correct configuration for anti-icing when taxiing after landing?

A

ICE PROTECTION MODE knob set to ON.

33
Q

What is the maximum airspeed if the windshield wipers fail unparked?

A

VMO/MMO

34
Q

What happens if the windshield wiper is operated on a dry windshield?

A

a. The windshield wipers will not operate on a dry windshield.
b. Wiper will remain inoperative until the selector is set to OFF then one of the three available speeds.

35
Q

Is there a test for the anti-ice system?

A

Yes, but mx performs the test.

36
Q

When do we use the ice protection test selector knob?

A

TEST Function is a maintenance procedure.

37
Q

Passing through 10,000 feet after takeoff, you see the EICAS A-I WIND VLV OPEN; why?

A

The wing anti-ice system is testing itself.

38
Q

Icing conditions exist when SAT on the ground or takeoff or TAT in flight is:

A

10°C or below with:
Visible moisture present in any form OR
When operating on contaminated surfaces.

39
Q

During taxi put and takeoff, the MCDU T/O DATASET MENU must be set to _______ when SAT is 10°C or below and icing conditions exist or are anticipated to exist below 1700 AFE.

A

ALL

40
Q

The maximum speed for windshield wiper operations is?

A

250 knots.

41
Q

What compressor stage is bleed air tapped for anti-icing operations?

A

10th stage

42
Q

What indication would you get if the ADS probes were frozen on the ground?

A

Undesired airspeed indication on the ground

EICAS fault messages

43
Q

How do you clear the ADSPs if they are frozen in the ground?

A

Run an engine for 10 minutes OR
Turn ON the ADSP heater for 10 minutes
Verify no airspeed indication or EICAS messages remain

Republic Airways (18 decks)

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