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Arkia A321 > Fire Protection > Flashcards

Fire Protection Flashcards

1
Q

What happens when both Fire Detection loops fail?

A

After 5 seconds, they will trigger the fire alarm

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2
Q

How many Halon bottle are there?

A

2 per engine, 1 for APU, 2 shared for the cargo compartments, 1 in each lavatory waste bin (auto and non-alerting)

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3
Q

How many smoke detector cavities are in the cargo holds?

A

2 forward, 3 aft (each has 2 smoke detectors)

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4
Q

When will a cargo smoke activated?

A

When both detectors in the same cavity detect smoke, or one detects and the other is inop

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5
Q

Where is the avionics smoke detector?

A

Air extraction duct

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6
Q

What does the ENG FIRE button do?

A 
Silence aural warning
Arms squibs
Closes hydraulic fire shut off valve
Closes low-press fuel valve
Deactivates the IDG
Closes the pack flow control valve
Closes the engine bleed valve
Cuts off FADEC power
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7
Q

What does the GEN 1 LINE pb do?

A

During an avionics smoke detection, it will:
Disconnect generator 1 from electrical system
EXCEPT will continue to power one fuel pump in each wing tank

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8
Q

What is the CAB FAN?

A

Cockpit/cabin recirculation fan. Turned off during aviaoinics smoke detection

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9
Q

When you are complete with shutting down both engines, what remaining systems will the battery power?

A

VHF 1 and the PA

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10
Q

How long does it take to discharge the cargo hold bottles

A

Bottle 1 - 60 seconds, bottle 2 (through a flow metering system) - 195 minutes. remember that the smoke lights will remain on for the rest of the flight because the hold is full of Halon particles

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11
Q

How many fire bottles per engine / APU?

A

Engine: 2 each
APU: 1

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12
Q

Is fire detection available if a loop fails?

A

Yes, a fault in one loop (A or B) does not affect the warning system.

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13
Q

What happens if both loops fail within 5 seconds?

A

A fire warning appears

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14
Q

Agent DISCH (amber) indicates what?

A

“DISCH” lights up amber when its fire extinguisher bottle has lost pressure (being discharged).

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15
Q

What are the indications for an ENG FIRE test? And an APU FIRE test.

A

ENG (APU) FIRE TEST pb:
- a continuous repetitive chime sounds
- MASTER WARN lights flash
- ENG (APU) FIRE warning appears on ECAM
- On the fire panel:
• ENG (APU) FIRE p/b lights up red
• SQUIB lights comes on white if discharge supplies are available
• DISCH lights comes on amber
- On the ENG panel (pedestal):
• FIRE light comes on red

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16
Q

On the external fire panel what does the APU SHUT OFF Switch do?

A

This p/b is used for manual APU emergency shutdown
- The APU LP fuel shutoff valve closes.
- The ECB receives a signal to shutdown sequence (same as the APU automatic shutdown without cool down).
- Silences the external warning horn.

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17
Q

What happens if a lavatory waste bin catches fire? And lavatory smoke?

A

When a detector finds smoke in a lavatory, it sends a signal to the CIDS to FWC to cabin and cockpit warnings. Each lavatory waste bin has an automatic fire extinguisher. (Wax type, melts the discharge).

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18
Q

How many fire bottles for CARGO Fire Extinguishing?

A

2 fire bottles supply 5 nozzles (2 FWD, 3 AFT). Each bottle has 2 discharge heads, one for each compartment.

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19
Q

During a cargo smoke drill, how many DISCH lights are illuminated?

A

2

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20
Q

A red disc in the aircraft skin near the APU indicates what?

A

The agent is NOT discharged overboard due to bottle overpressure.

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21
Q

When is white SQUIB light illuminated?

A
  • SQUIB lights up white when the pilot pops the APU FIRE p/b is released out.- Test p/b
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22
Q

How many fire extinguishing bottles are available for fighting an APU fire?

A

One.

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23
Q

Each lavatory is equipped with…

A

One smoke detector and one smoke detection control unit.

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24
Q

What is the result if you press the APU FIRE pb?

A

Silences the aural fire warning arms the squib on the APU fire extinguisher closes the low-pressure fuel valve the APU bleed valve the X bleed valve shuts off the APU fuel pump and deactivates the APU generator.

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25
Q

What kind of smoke detection is installed in the avionic bay?

A

One smoke detector in the air extraction duct of the avionic ventilation system detects smoke in the avionics compartment.

26
Q

Where are the sensing elements for the fire and overheat detection system located?

A

The three sensing elements for each engine are located in the pylon nacelle in the engine core and in the engine fan section.

27
Q

How many halon fire extinguishing cylinders are there per engine?

A

Each engine has two fire extinguishers.

28
Q

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

A

If the system detects an APU fire while the aircraft is on the ground it shuts down the APU automatically and discharges the extinguishing agent.

29
Q

Can the APU FIRE test be done using battery power only?

A

Yes.

30
Q

Is a smoke detection or extinguishing system for the wastebins in the lavatory available?

A

Each lavatory wastebin has an automatic fire extinguishing system.

31
Q

The aft cargo compartment smoke detection system consists of…

A

6 smoke detectors and a two channel smoke detection control unit.

32
Q

Is an extinguishing system in the cargo compartments available?

A

Yes two fire bottles supply 5 nozzles (2 in the FWD and 3 in AFT compartment). Bottle 1 is discharged in aprox. 60 s Bottle 2 discharges for at least 195 minutes.

33
Q

When does the APU fire bottle discharge automatically?

A

The bottle discharges automatically if there is an APU fire when the aircraft is on the ground.

34
Q

How many smoke detectors are installed in the cargo compartments?

A

4 FWD 6 AFT.

35
Q

Illumination of the GEN 1 LINE SMOKE light indicates…

A

Smoke has been detected in the avionic compartment ventilation duct.

36
Q 
ENG 1 (2) FIRE LT
(FIRE panel)

When does it come on?

A

This red light comes on, regardless of the ENG 1 (2) FIRE pb’s position, whenever the fire warning for the corresponding engine is activated.

37
Q 
AGENT 1 (2) pb
(FIRE panel)
  • SQUIB
  • DISCH
A

A brief push on the button discharges the corresponding fire bottle.SQUIB:Lights up white when the ENG FIRE button is popped for its engine to help the flight crew identify the AGENT pb to be activated.DISCH:Lights up amber when its fire extinguisher bottle has lost pressure.

38
Q

APU FIRE pb sw
(FIRE panel)

Pressing it does what?

A
  • Shuts down APU- Silences the aural warning- Arms the squib- Closes the low-pressure fuel valve- Shuts off the APU fuel pump- Deactivates the APU generator- Closes the APU bleed valve and X bleed valve
39
Q

AGENT pb
(FIRE panel - APU)

  • SQUIB Light
  • DISCH Light
A

This button becomes active when the pilot pops the APU FIRE button.The flight crew presses it briefly to discharge the fire bottle.SQUIB:Lights up white when the pilot pops the APU FIRE buttonDISCH:Lights up amber when the fire extinguisher bottle has lost pressure.

40
Q

APU FIRE Light
(FIRE panel)

When does it come on?

A

The red APU FIRE light comes when the APU fire warning is activated, regardless of the position of the pb.

41
Q

FIRE Light
(ENG panel on pedestal)

  • FIRE Light
A

FIRE Light:Light comes on red when an engine fire warning is triggered.

42
Q

FWD or AFT (lights)
(CARGO SMOKE panel)
SMOKE light
DISCH light

A

SMOKE light:This red light, and the associated ECAM warning, come on when the system detects smoke in the indicated compartment.DISCH light:Within 60 seconds after pressing the DISCH pb, this amber light comes on, indicating that the agent bottle has fully discharged.

43
Q 
DISCH pb (FWD or AFT)
(CARGO SMOKE panel)
A

This button ignites the squib to discharge the extinguishing agent in the corresponding compartment (FWD or AFT).

44
Q

TEST pb
(CARGO SMOKE panel)

Indications of a good test:

A

Pressing this button for at least 3 seconds, and until it is released:- Tests the smoke detectors in sequence.- Turns on the red smoke lights twice.- Displays the ECAM warning.- Closes the ventilation system’s isolation valves.- Turns on the amber DISCH lights.

45
Q

What does an amber DISCH light mean?

A

The fire extinguisher bottle has lost its pressure

46
Q

List the actions that occur when the APU FIRE pushbutton is pressed.

A
  • 2-Silences the aural fire warning and arms the APU fire extinguisher squib- 1-Shuts down the APU (ECB)- 2-Closes the low-pressure fuel valve and shuts OFF the APU fuel pump- 1-Deactivates the APU generator- 2-Closes the APU vleed and X bleed valves
47
Q

How many fire extinguisher are provided for the cargo compartments?

A

2 Bottles, which can be discharged to either compartment

48
Q

Where are the engine fire loops located?

A
  • Pylon Nacelle- Engine Core- Fan Section
49
Q

What happens if both fire loops fail?

A

If the failure of both loops occurs within 5 seconds of each other, a FIRE warning will be issued

50
Q

How many fire extinguisher are provided for each engine?

A

2

51
Q

What occurs when you press the TEST pushbutton on the ENGINE FIRE panel?

A

7 Lights - CRC Sounds - MASTER WARN lights flash (2) - ENG FIRE pb illuminates red (1) - SQUIB and DISCH lights illuminate (2) - ECAM FIRE WARNING (1) - FIRE light on the ENG panel illuminates (1)

52
Q

How many fire extinguishers are provided for the APU?

A

1

53
Q

What occurs when you press the APU FIRE TEST pushbutton?

A

5 Lights - CRC Sounds - MASTER WARN lights flash (2) - APU FIRE pb illuminates red (1) - SQUIB and DISCH lights illuminate (1) - ECAM FIRE WARNING (1)

54
Q

Does the APU fire extinguisher automatically discharge if a fire is detected on the ground?

A

Yes. The APU will automatically shut down at the APU fire extinguisher will discharge.

55
Q

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

A

No

56
Q

Where are the HYD FIRE SHUTOFF VALVES located?

A

Between the respective reservoir and ENG pump

57
Q

What does the amber SMOKE light in the GEN 1 LINE pushbutton indicate?

A

Smoke detected in the avionic ventilation ducting

58
Q

What are the indications when you TEST the CARGO SMOKE?

A

FIVE 2’s- 2 amber DISCH lights illuminate and extinguish, then- 2 red SMOKE lights illuminate- 2 MASTER WARNING lights with CRC- 2 CARGO SMOKE lines on ECAM- Test runs TWICE to check both Smoke Detector Control Unit (SDCU) channels

59
Q

Is the skin heat exchanger ever bypassed in flight?

A

Yes, during SMOKE configuration

60
Q

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

A
  • Both channels detect smoke, OR- One channel faulty and the other detects smoke

Arkia A321 (23 decks)

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