Fire Protection

Question 1

Engine Fire Extinguisher Handle PULL/ROTATE

Answer 1

PULL - closes bleed air, fuel and hyd SOV

ROTATE - discharges bottles

Question 2

APU Fire Extinguisher Button

Answer 2

closes APU fuel SOV and discharges APU fire extinguisher bottle

Question 3

Cargo Fire Detection/Extinguisher Button

Answer 3

automatically discharges the high and low rate cargo extinguisher bottles into the associated cargo compartment

Question 4

Which electrical busses power the engine fire detection/extinguishing?

Answer 4

detection - MAU 1 (DC ESS BUS 1) and MAU 3 (DC ESS BUS 2)

extinguishing - HOT BATT BUS 1 and HOT BATT BUS 2

Question 5

Describe the engine fire detection system

Answer 5

eight pneumatic detector loops connected to the MAU

Question 6

engine fire indications

Answer 6

• aural warning
• fire extinguisher handle illuminates
• master WARNING
• FIRE light on respective ITT indicator
• ENG 1 or 2 FIRE on EICAS

Question 7

Where are the engine fire extinguishing bottles located?

Answer 7

the wing and fuselage fairing

Question 8

How many engine fire bottles?

Answer 8

2

Question 9

Which electrical busses power the APU fire detection/extinguishing?

Answer 9

detection - MAU 1 (DC ESS BUS 1) MAU 3 (DC ESS BUS 2)

extinguishing - DC ESS BUS 2

Question 10

Describe the APU fire detection system

Answer 10

two pneumatic detector loops connected to the MAU

Question 11

APU fire indications

Answer 11

• aural warning
• red stripped bar on APU emerg stop
• master WARNING
• APU FIRE on EICAS

Question 12

How many APU extinguisher bottles?

Answer 12

one

Question 13

On the ground the APU will automatically shut down if:

Answer 13

the APU Emergency Stop Button is not pressed 10 seconds after an APU fire detection

Question 14

When the APU Fire Extinguisher button is pressed the system:

Answer 14

• discharges the APU fire bottle
• shuts down the APU
• closes the APU fuel SOV
• displays APU FIREX BTL DISCH on EICAS

Question 15

Number of cargo smoke detectors

Answer 15

fwd - three

aft - two

Question 16

cargo fire indications

Answer 16

• aural warning
• master WARNING
• cargo compartment extinguishing button illuminates
• CRG AFT or FWD SMOKE on EICAS

Question 17

How many cargo extinguisher bottles and location?

Answer 17

2; center electronics bay

Question 18

Pressing the cargo compartment extinguishing button causes:

Answer 18

• high rate bottle discharges immediately
• CRG FIREX HI DISCH on EICAS
• one min later or upon second press in air (or upon second press on ground) low rate bottle discharges and remains in compartment for 1 hour

Question 19

Non annunciated cargo fire extinguishing

Answer 19

first button press arms bottles

Question 20

Number of lav smoke detectors

Answer 20

2, one in each lav ceiling

Question 21

Lav smoke detection indications

Answer 21

• master WARNING
• LAV SMOKE on EICAS
• alarm in lav
• flashing amber light on attendant light panel

Question 22

How many lav fire bottles and location?

Answer 22

2, one installed on each lav waste container

Question 23

Lav fire bottle operation

Answer 23

high temp automatically discharges extinguishing agent

Question 24

Fire Detection Test indications

Answer 24

• aural warnings
• master WARNING
• ENG 1 or 2 FIRE on EICAS
• APU FIRE on EICAS
• CRG AFT (FWD) SMOKE on EICAS
• fire handles illuminate
• APU fire extinguishing button and APU emergency stop button illuminates
• cargo fire extinguishing buttons illuminate
• forward cargo fan deactivates and vent outflow valve closes (only if bleed air is being provided)
• FIRE warning on ITT indicator

Question 25

Lav Smoke test indications

Answer 25

• LAV SMOKE on EICAS

- master WARNING

Question 26

APU FIRE warning

Answer 26

a fire condition has been detected in APU

Question 27

CRG (AFT or FWD) SMOKE warning

Answer 27

smoke has been detected in the associated cargo compartment

Question 28

ENG 1 or 2 FIRE warning

Answer 28

a fire condition has been detected in the associated engine

Question 29

LAV SMOKE warning

Answer 29

smoke has been detected in the lavatory

Question 30

APU FIRE DET FAIL caution

Answer 30

APU fire detection system has failed

Question 31

APU FIREX FAIL caution

Answer 31

APU fire extinguisher bottle has failed

Question 32

CRG (AFT or FWD) FIRESYS FAIL caution

Answer 32

all smoke detectors have failed in the associated compartment, or pressure in any extinguisher bottle is low, and the cartridges are intact, or any of the cartridge circuits are opened

Question 33

ENG 1 or 2 FIRE DET FAIL caution

Answer 33

engine fire detection system has failed

Question 34

LAV SMOKE DET FAIL caution

Answer 34

lav smoke detection system has failed

Question 35

APU FIREXBTL DISCH advisory

Answer 35

APU fire extinguisher bottle has been discharged

Question 36

CRG FIRE PROT FAULT advisory

Answer 36

failures of smoke detectors in a cargo compartment or any SPDA internal failure, which does not render the smoke detection completely inoperative

Question 37

CRG (FWD or AFT) FIREX HI ARM advisory

Answer 37

high rate cargo firex system armed either automatically or manually

Question 38

CRG (FWD or AFT) FIREX LOW ARM advisory

Answer 38

low rate cargo fire system armed after high rate bottle discharged

Question 39

ENG (1 or 2) FIREX BTL (A or B) FAIL advisory

Answer 39

associated fire extinguisher bottle has failed

Question 40

ENG FIREXBTL (A or B) DISCH advisory

Answer 40

associated fire extinguisher bottle has been discharged

Question 41

CARGO FIREX (HI or LO) DISCH status

Answer 41

cargo (high rate or low rate) discharge fire extinguisher bottle has been discharged