Fire Protection

Question 0

How many detector loops are there in the engine

Answer 0

2

Question 1

How is the engine fire system powered

Detection and

Extinguishing

Answer 1

Detection-  MAU1( DC ESS bus 1)
And MAU3(DC ESS bus 2)

Extinguishing- hot batt bus 1 and 2

Question 2

What happens when a engine
fire is detected

4

Answer 2

Aural warning

Lights- fire handle and master warning

EICAS- fire warning light in respective ITT INDICATOR

EICAS warning msg ENG 1/2 fire is displayed

Question 3

What happens when you pull the fire handle

3

Answer 3

Closes
Engine fuel shutoff valve
Engine hydraulic shutoff valve
Engine bleed shutoff valve

Question 4

How many fire extinguishing bottles are there

Answer 4

2. A and B

Question 5

How do you discharge bottle A

Answer 5

Pull fire handle and rotate counter clockwise

Question 6

How do you discharge bottle B

Answer 6

Pull fire handle and rotate clockwise

Question 7

Describe APU fire protection system

Answer 7

Provides fire detection
Extinguishing
And continuos built in test

Question 8

How is APU fire system powered

Answer 8

Detection

MSU 1 ( DC ESS bus 1) and MAU3 ( DC ESS bus 2)

Extinguishing

DC ESS bus 2

Question 9

How many detection loops in the APU

Answer 9

2

Question 10

What happens when APU fire is detected

Answer 10

Aural warning
Master warning light
Red striped bar of APU emergency stop button illuminates

EICAS - warning msg APU fire

Question 11

What happens when you push the APU fire extinguisher button

Answer 11

Discharges APU bottle

APU FADEC shuts down APU

Closes the APU fuel feed shutoff

Displayed EICAS MSG - APU fired btl disch

Question 12

Will APU auto shutdown on ground because of fire

Answer 12

Yes after 10 seconds

Question 13

How many smoke detectors in forward cargo

Answer 13

3

Question 14

How many smoke detectors in aft cargo

Answer 14

2

Question 15

What happens with a cargo smoke indication

Answer 15

All.

Aural warning

Lights-
Master warning
Associated cargo extinguishing compartment button illuminates

EICAS

CRG AFT SMOKE
CRG FWD SMOKE

Appropriate bottle is armed

If forward compartment —

air circulation fan turns off and forward ventilation outflow valve closes

Question 16

Which cargo compartment can hold live animals

Answer 16

Forward

Question 17

How many bottles for the cargo departments

Answer 17

2. One high rate and one slow rate

Both located in center Avionics bay

Question 18

How long will low rate cargo bottle provide protection

Answer 18

60 mins

Question 19

How will the cargo bottles discharge

In flight

Answer 19

High rate. Push button once

Low rate will discharge after 1 minute unless you push button sooner

Question 20

How will cargo bottles discharge

On ground

Answer 20

High rate. Push button

Low rate must push button again
Not automatic

Question 21

Can you discharge the cargo fire bottles without an EICAS msg

Answer 21

Yes, by pushing the respective button twice

Question 22

How is lav fire detection provided

Answer 22

One smoke sensor in each ceiling

Question 23

If smoke is detected in lav what indications

Answer 23

Master warning light

EICAS msg LAV smoke

Alarm in the LAV and flashing red light

Flashing amber light on FA rainbow panel

Question 24

Does the LAV have fire extinguishing

Answer 24

Yes, In each trash bin

Automatic after a certain temp limit is reached

Question 25

What does the fire detection system test button do

Answer 25

Tests the engine fire detection
APU fire detection
And CRG smoke detection

Question 26

What is a successful test of fire detection system

Answer 26

Fire aural warnings sound
Master warning lights flash
Fire extinguisher handle lights steady
Cargo fire extinguisher buttons lights steady
APU fire extinguisher button and upper half of APU emergency stop button illuminates

EICAS msgs (5)

Eng fire 1
Eng fire 2
APU fire
CRG aft smoke
CRG fwd smoke

EICAS indications

Fire warning light in ITT illuminates

Forward cargo compartment fan turns off and outflow valve closes

Question 27

What happens if you hold the fire detection button for 10 seconds

Answer 27

APU shutdown