Fire Protection Flashcards

1
Q

What are the fire detection loops made out of?

A

Stainless steel capillaries tube containing helium and hydrogen

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2
Q

The left essential bus powers which loops for the engine fire protection system?

A

The left essential bus powers Loop A for engine number one and Loop B for engine number two

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3
Q

Which loops of the fire protection system does the right essential bus power?

A

The right essential bus powers loop A for engine number two and loop B for engine number one

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4
Q

How does each responder unit detect engine fire conditions in the engine nacelle?

A

By sensing the gas pressure in its loop.

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5
Q

If one of the fire sensing loops sends a fire warning to the cockpit what should you see?

A

Both red engine fire press to reset switch lights will flash, the pull fuel off handle of the affected engine will illuminate, the check fire detection warning light, on the caution/warning panel will flash, the master warning press to reset switch light will flash and the fire bell will sound.

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6
Q

How is the fire bell cancelled?

A

By pressing either of the engine fire press to reset switch lights

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7
Q

What’s the fire extinguisher chemical used In the fire detection loops?

A

Halon 1301

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8
Q

Where are the fire extinguisher bottles located?

A

Located in the left wing root fearing

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9
Q

Each extinguisher bottle has two discharge valves how are they actuated?

A

Each are actuated by electronically detonated explosive cartridges called, squibs

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10
Q

If the pull fuel off handles are pushed back in what occurs?

A

Fuel and hydraulics are restored and the bottles are disarmed.

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11
Q

When the fire is extinguished what happens to the pull Fuel off handle and all fire warnings?

A

The pull fuel off handle will extinguish and all fire warnings will go out.

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12
Q

What powers the fire extinguisher discharge circuits?

A

The battery bus to ensure fire extinguisher operation in the event of an electrical power failure

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13
Q

What is the discharge indication when the extinguishant is discharged into the nacelle ?

A

The yellow disc discharge indicator

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14
Q

What does the red disc indicate?

A

The red disc is the thermal discharge indicator and is ejected by extinguishant escaping to the atmosphere due to thermal expansion.

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15
Q

What kind of Fire protection in the baggage compartment?

A

To smoke detectors provide visual warning in the flight compartment of an incipient or active fire in the baggage area

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16
Q

If the smoke detectors in the baggage area detect fire what indications in the flight deck do you get?

A

The smoke warning light on the warning light panel illuminates for as long as the smoke is present.

17
Q

Testing the baggage smoke warning system illuminates which warning lights?

A

The smoke warning light and master warning Switch light

18
Q

How many 1.5 kg BCF hand held fire extinguishers are provided on the aircraft?

A

Four

19
Q

If the lavatory smoke alarm is activated what occurs?

A

A loud continuous alarm will be produced by the unit a single chime is heard in the cabin and a steady red light illuminates on the flight attendant annunciator panel.

20
Q

What indication do you get of a fire in the baggage compartment?

A

Illumination of the smoke warning light

21
Q

The effect of a single fire detection loop failing is what?

A

There is no affect on fire detection capability

22
Q

Ilumination of an amber bottle light on the fire protection panel indicates what?

A

The bottles is armed

23
Q

Fire detection in the lavatory is achieved by what?

A

Single smoke detector

24
Q

During an engine fire detection test is the fire bottles armed indication observed ?

A

No

25
Q

Fire detection in the engine nacells is provided by what?

A

Heat sensing loops

26
Q

Does the pull fuel off handle flash when you get an indication of a fire in the number one engine nacelle ?

A

No