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Flashcards in Fire Protection Deck (28):
0

How is the engine fire system powered

Detection and

Extinguishing

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

Extinguishing- hot batt bus 1 and 2

1

How many detector loops are there in the engine

2

2

What happens when a engine
fire is detected

4

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

3

What happens when you pull the fire handle

3

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

4

How many fire extinguishing bottles are there

2. A and B

5

How do you discharge bottle A


Pull fire handle and rotate counter clockwise

6

How do you discharge bottle B

Pull fire handle and rotate clockwise

7

Describe APU fire protection system

Provides fire detection
Extinguishing
And continuos built in test

8

How is APU fire system powered

Detection

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

Extinguishing

DC ESS bus 2

9

How many detection loops in the APU

2

10

What happens when APU fire is detected

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

EICAS - warning msg APU fire

11

What happens when you push the APU fire extinguisher button

Discharges APU bottle

APU FADEC shuts down APU

Closes the APU fuel feed shutoff

Displayed EICAS MSG - APU fired btl disch

12

Will APU auto shutdown on ground because of fire

Yes after 10 seconds

13

How many smoke detectors in forward cargo

3

14

How many smoke detectors in aft cargo

2

15

What happens with a cargo smoke indication

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

16

Which cargo compartment can hold live animals

Forward

17

How many bottles for the cargo departments

2. One high rate and one slow rate

Both located in center Avionics bay

18

How long will low rate cargo bottle provide protection

60 mins

19

How will the cargo bottles discharge

In flight

High rate. Push button once

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

20

How will cargo bottles discharge

On ground

High rate. Push button

Low rate must push button again
Not automatic

21

Can you discharge the cargo fire bottles without an EICAS msg

Yes, by pushing the respective button twice

22

How is lav fire detection provided

One smoke sensor in each ceiling

23

If smoke is detected in lav what indications

Master warning light

EICAS msg LAV smoke

Alarm in the LAV and flashing red light

Flashing amber light on FA rainbow panel

24

Does the LAV have fire extinguishing

Yes, In each trash bin

Automatic after a certain temp limit is reached

25

What does the fire detection system test button do

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

26

What is a successful test of fire detection system

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








27

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

APU shutdown