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AIRBUS A320 > FIRE FIGHTING SYSTEMS > Flashcards

FIRE FIGHTING SYSTEMS Flashcards

1
Q

How many fire bottles are installed in the aircraft, excluding cabin and flight deck bottles?

A

7 in total
2 per engine
1 for the APU
1 shared one for the cargo hold
1 in Lavatory waste bin

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2
Q

How many smoke detectors are in the cargo holds?

A

6 in total
2 in the FWD and 4 in the AFT

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3
Q

Where in the system is the avionics smoke detector located?

A

In the air extraction duct

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4
Q

What does the pressing of the ENG FIRE pb do?

A

2-1-2-2-2
Silence warning
Arms squibs
Close engine driven HYD shut-off valve
Closes LP fuel valve and IDG fuel return valve
Trip the generator and FADEC
Close the engine bleed valve and Pack Flow valve

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5
Q

What does the GEN 1 LINE pb do?

A

It will disconnect GEN 1 from the electrical system EXCEPT it will continue to power one fuel pump in each wing

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6
Q

How long can it take to completely discharge the cargo hold Halon fire bottles?

A

Up to 60 seconds

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7
Q

Will the SMOKE light indication for the cargo holds extinguish when the fire is out?

A

No, because the compartments will be full of Halon particles

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8
Q

Is fire detection available if one fire detection fails?

A

Yes, it’s and AND/OR gate

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9
Q

What does the Agent DISCH (amber) indicate?

A

Lights up when the bottle lost pressure

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10
Q

What indications are you looking for during a fire test?

A
  • Chime
  • Master Warning
  • FIRE pb lights up
  • SQUIB lights comes on white if discharge is available
  • DISCH comes on in AMBER
  • On the ENG panel (pedestal), the fire lights comes on in red
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11
Q

How is the lavatory protected from smoke and fire?

A

Lavatories have smoke detection in the compartment and fire extinguishing only in the bin

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12
Q

What does the red disc in the aircraft skin near the APU indicate?

A

Indicates that the agent is not discharged due to bottle overpressure

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13
Q

How many firebottles are available for the APU?

A

1

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14
Q

What happens when you push the APU FIRE pb?

A
  • Silence the warning
  • Arms the squib
  • Closes LP fuel valve
  • Closes APU bleed and X bleed valve
  • Shuts off the APU fuel pump
  • Deactivates the APU generator
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15
Q

Where are the sensing elements for the engines fire loops located?

A
  • Pylons
  • Engine core
  • Fan section
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16
Q

How many fire extinguishers are there per engine?

A

2

17
Q

What happens if the system detects a APU fire on the ground?

A

It shuts down the APU and discharges the agent automatically

18
Q

Can the APU FIRE test be done with battery as the only power source?

A

Yes, but half the lights will be illuminated and there will not be a chime

19
Q

What does the illumination of the GEN 1 LINE SMOKE light indicate?

A

Smoke has been detected in the avionics compartment ventilation duct

20
Q

What happens if both fire loops fail?

A

A FIRE warning will be issued by the system

21
Q

Does the APU fire extinguisher discharge automatically if a fire is detected in-flight?

A

No

22
Q

Where are the HYD FIRE SHUTOFF VALVES located?

A

Between the respective reservoir and ENG pump

23
Q

What does the red SMOKE light in the FWD or AFT fire pb indicate?

A

Both loops detects smoke OR one loop is faulty and the other is detecting smoke

24
Q

What happens to the resistance in a fire loop when the temperature increases?

A

The resistance gets lower

25
Q

How many smoke detectors are there in the FWD cargo hold?

A

2

26
Q

How many smoke detectors do we have in the aft cargo hold?

A

4

27
Q

What does an illuminated SQUIB light in the AGENT 1 or 2 fire pb indicate?

A

Indicates that the Agent pb is activated and ready for use. Comes on after the ENG FIRE pb is depressed

28
Q

What does a FAULT light in either the blower or EXTRACT pb sw mean?

A

Smoke has been detected in the avionics compartment ventilation duct

AIRBUS A320 (33 decks)

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