Fire System

Question 1

What section of the aircraft have Fire detection and extinguishing capabilities

Answer 1

1. Engines
2. APU
3. Cargo
4. Lav

Question 2

Pulling the Engine Fire handle does what

Answer 2

1. Closes the Bleed air shutoff valve.
2. Closes Fuel shutoff valve.
3. Closes Hydraulic Shutoff Valve.
4. Bleed Air XBLEED is commanded closed
5. Arms the fire bottles

Question 3

Rotating the Fire Handle does what

Answer 3

Extinguishes the bottle into that engine

Question 4

Pushing the APU FIRE EXTINGUISHING BUTTON does what

Answer 4

Closes the APU fuel shutoff valve and extinguishes the bottle.

Question 5

What happens when you push the CARGO FIRE buttons when not lit?

Answer 5

Arms the bottle and the button turns red.

Question 6

What happens when you push the CARGO FIRE buttons when the button is lit.

Answer 6

Both low and high rate bottles are discharge in to the respective cargo compartments.

Question 7

What Electrical Buses are the ENG FIRE Extinguishing connected to

Answer 7

HOT BATT BUS 1 and HOT BATT BUS 2

Question 8

What EICAS Msgs, light and warnings do you get when their is an engine fire

Answer 8

1. Aural Warning
2. Fire handles light up
3. Warning lights up on glare shield.
4. EICASE Message ENG FIRE 1 (2)
5. Fire warning in the ITT illuminates.

Question 9

which way do you rotate the handles to extinguish the bottles.

Answer 9

1. Rotate counter clockwise extinguishes bottle A

2. Rotate clockwise extinguishes bottle B

Question 10

Can you fight a Engine Fire or APU fire on the ground with only DC power

Answer 10

Yes, the fire extinguishing systems are connected to DC HOT BATT Bus.

The Batteries need to be on to fight an APU Fire.

Question 11

When will the APU FIRE EXTINGUISHING BUTTON illuminate

Answer 11

1. After pressing the APU EMRGENCY Stop Button

2. After 60 seconds and not pushing the Emergency stop button.

Question 12

Pushing the FIRE EXTINGUISHING BUTTON for the APU does what?

Answer 12

1. Shuts down the APU
2. Discharges the bottle
3. Fuel shutoff is closed.
4. EICAS message telling you the bottle was blown.

Question 13

How many smoke detectors are in each Cargo Compartment?

Answer 13

1. 3 in the front

2. 2 in the aft.

Question 14

When does the Air Circulation Fan turn off and The Outflow ventilation Valve close in the forward cargo and the bottle gets armed?

Answer 14

When smoke is detected.

Question 15

What System indications do you get when their is Smoke in the Cargo

Answer 15

1. Warning on Glare Shield
2. CRG FWD SMOKE - EICAS
3. Aural Warning.
4. Respective Fire Extinguishing push buttons illuminate.

Question 16

what happens when smoke is detected in the Aft cargo

Answer 16

The bottle arms

Question 17

Pressing the CARGO FIRE Extinguishing BUTTON causes what?

Answer 17

1. High rate of discharge bottle discharges immediately.

2. one minute later the Low rate bottle discharges for 75 minutes, giving you 60 minutes to divert.

Question 18

On the Ground, During a Cargo Fire, after pressing the Fire Extinguishing Button, does the low rate bottle discharge on the ground?

Answer 18

No you need to press the Button again.

Question 19

Can you extinguish the Cargo Fire Bottle into the Cargo compartment with out an annunciation?

Answer 19

Yes press the button 2 times, one to arm and one to discharge. The low flow bottle will also discharge after 1 minute of pressing the button.

Question 20

What electrical Bus is the APU fire extinguisher System

Answer 20

DC ESS BUS 2

Question 21

How many fire detection loops do the engines have

Answer 21

2 loops

Question 22

How many fire detection loops does the APU have

Answer 22

2 Loops

Question 23

When their is an APU fire what do you see and hear?

Answer 23

1. Master Warning
2. Fire Bell
3. APU FIRE EICAS
4. Red stip bar or APU EMERGENCY STOP BUTTON

Question 24

The APU will auto shutdown on the ground when?

Answer 24

When fire is detected after 10 seconds.

Question 25

What happens if their is smoke it the Lav?

Answer 25

1. Master Warning 2. LAV SMOKE EICAS message 3. IN the law the Smoke alarm comes on and the flashing light 4. FA gets a flashing amber light.

Question 26

APU will not shutdown in flight why not?

Answer 26

Bad day and APU is the only source of AC power the airplane will not take that away from us. It will let it burn.

Question 27

Will any bottles auto discharge anywhere in the plane?

Answer 27

No, the LO Rate bottle will auto deploy after 60 seconds but you still had to push the cargo extinguisher button.

Question 28

What will the APU Auto shutdown? Air and Ground

Answer 28

Ground 1. Under Speed 2. Over Speed 3. FADEC Fault 1. Sensor Fault 2. High Oil Temp 3. EGT Over Temp 4. Low Oil Pressure 5. Fire Air 1. Under Speed 2. Over Speed 3. FADEC Fault

Question 29

When you press the Fire Extinguishing button and discharge a bottle what happens in the compartment?

Answer 29

1. Extinguishes High Rate bottle 2. 60 Seconds later the LO Rate bottle blows 75 minutes 3. Outflow valve and recirculation fans turn off.

Question 30

If you have a Pet in the forward cargo compartment, what will happen if you have a fire?

Answer 30

The Pet will die because you are closing the recirculation fans and outflow valve and your extinguishing the fire.

Question 31

When does the LAV Bottle extinguish in the Lav trans?

Answer 31

When the temperature inside the waste basket reaches a certain temperature than the bottle blows.