Ice and Rain Control Systems Flashcards

1
Q

Prior to installation of a pneumatic surface bonded type deicer boots, on leading edge of the wing, you should

A

remove all paint from the area to be covered by the deicer boot

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2
Q

Which of the following are found in a laminated integral electrically heated windshield system?

A

Autotransformer, heat control relay, heat control toggle switch and indicating light

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3
Q

When repairing a laminate structure, the repair must preserve the ________ of the original part.

A

Electrical bonding

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4
Q

What is one check for proper operation of a pitot static tube heater after replacement?

A

Ammeter reading

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5
Q

What controls that inflation swquence in a pneumatic deicer boot system?

A

Distributor valve

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6
Q

What is the source of pressure for inflating deicer boots on reciprocating engine aircraft?

A

Vane-type pump

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7
Q

Which of the following regulates the vacuum of the air pump to hold the deicing boots deflated when the pneumatic deicing system if off?

A

Suction relief valve

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8
Q

What may be used to clean deicer boots?

A

Soap and water

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9
Q

Some aircraft are protected against airframe icing by heating the leading edges of the airfoils and intake ducts, When is this type of anti-ice system usually operated during flight?

A

Whenever icing conditions are first encountered or expected to occur

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10
Q

Which of the following indications occur during a normal operational check of a pneumatic deicer system?

A

Fluctuating reading on the pressure gauge and relatively steady readings on the vacuum gauge

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11
Q

What method is usually employed to control the temperature of an anti-icing system using surface combustion heaters?

A

Thermo-cycling switches

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12
Q

What is the purpose of the distributor valve in a deicing system utilizing deicer boots?

A

To sequence the deicer boots inflations symmetrically

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13
Q

What is the purpose of the oil seperator in the pneumatic deicing system?

A

To protect the deicer boots from oil deterioration

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14
Q

Where are the heat elements located on most aircraft with electrically heated windsheilds?

A

Laminated in the glass

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15
Q

Two possible sources of heat for the operation of a wing thermal anti-icing system are

A

compressor bleed air, aircraft electrical system

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16
Q

What maintains normal windshield temperature control in a electrically heated windshield system?

A

Thermistors

17
Q

Arcing in an electrically heated windshield panel usually indicates a breakdown in the

A

conductive coating

18
Q

Which of the following connects vacuum to the deicer boots when the systems is not in operation, to hold the boots tightly against the leading edges in flight?

A

Distributor valve

19
Q

How do deicer boots help remove ice accumulations?

A

By breaking up ice formations

20
Q

Why are the tubes in deicer boots alternatively inflated?

A

Alternate inflation of deicer boots tubes keeps disturbance of the airflow to a minimum

21
Q

What system components aids in the prevention of carburetor icing?

A

Alcohol injection nozzle (could say heated induction air)

22
Q

Why should a chemical rain repellent not be used on a dry windshield?

A

It will restrict visibility

23
Q

What is the principle characteristic of a windshield pneumatic rain removal system?

A

An airblast forms a barrier that prevents rain drops from striking the windshield surface

24
Q

What mixture may be used as a deicing fluid to remove from form an aircraft surface?

A

Ethylene glycol and isopropyl alcohol

25
Q

Which of the following is the best means to use when removing wet snow from an aircraft?

A

A brush or squeegee

26
Q

What are three methods of anti icing aircraft windshields?

A

An electric heating element in the windshield, heated air circulating system, and windshield wipers and anti-icing fluid

27
Q

Using hot water or steam directly on plastic windshields for heating is likely to cause

A

the acrylic to become milky or cloudy

28
Q

What icing condition may occur when there is no moisture present?

A

Carburetor ice

29
Q

What should be used to melt the ice in a turbine engine if the compressor is immobile because of ice?

A

Hot air

30
Q

What is used as a temp sensing element in an electrically heated windshield?

A

Thermistor

31
Q

In what area of an aircraft would you find a carbon monoxide detector?

A

Cabin and Cockpt

32
Q

What occurs when a visual smoke detector is activated?

A

A lamp within the indicator illuminates automatically