ORAL* E145 FIRE PROTECTION

Question 1

What is a Class C baggage compartment

Answer 1

Must have smoke and fire detection, and FIREX system controlled from flight deck.
Smoke, flames, or Halon, etc cannot be able to enter PAX compartment
Ventilation within compartment must be controllable

Question 2

Which bus powers #1 Fire detection?

Answer 2

Essential DC bus 1

Question 3

Which bus powers #2 and APU fire detection

Answer 3

Essential DC 2

Question 4

What bus powers engine fire extinguish?

Answer 4

Hot bus 1 and 2

Question 5

What do engines use to detect fire?

Answer 5

A tube filled with helium with hydrogen filled core (detects pressure changes due to heat)

Question 6

Is sensor tube normally open or closed?

Answer 6

closed

Question 7

What happens if sensor integrity switch is open?

Answer 7

Engine or APU FIREDET FAIL caution message

Question 8

What are indications of an engine fire

Answer 8

Fire handle lights, aural warning, EICAS warning, Master warning lights flash

Question 9

what are indications of APU fire?

Answer 9

Aural warning, EICAS Warning, master warning

Question 10

What happens if APU fire detected on the ground?

Answer 10

APU shuts down automatically

Question 11

How many bottles?

Answer 11

2 for engines, 1 for APU

Question 12

Where are fire bottles for engine and APU?

Answer 12

Tailcone

Question 13

Can you use either bottle for either engine?

Answer 13

Yes

Question 14

Can you fire bottle twice?

Answer 14

no, it can damage bottle.

Question 15

How do you fire APU fire bottle

Answer 15

Press APU FIRE extinguishing button

Question 16

What does EXTBLT INOP mean

Answer 16

It’s been fired or is inop

Question 17

What happens when engine bottle handle is pulled?

Answer 17

Hydraulics, Bleeds, Cowls, and and Fuel all shutoff

Question 18

What happens when APU Fire button is pushed?

Answer 18

fuel shuts off, blows the bottle, and sends stop request to fadec for shut down

Question 19

ow many seconds must you push Fire test button

Answer 19

2

Question 20

What do you see in Fire test?

Answer 20

3,4,5….3 lights over head, 4 lights on glare shield, and 5 EICAS messages. Also aural warning and baggage circ. fan shuts off

Question 21

what if you hold fire test button more than 10 seconds on the ground?

Answer 21

APU will shut down

Question 22

Repeating fire test…how long do you wait?

Answer 22

6 seconds between tests

Question 23

If you hold fire test less than 2 seconds…

Answer 23

the baggage extg button may stay lit…repeat the test.

Question 24

where is Lav smoke detector panel

Answer 24

near forward galley

Question 25

What happens if smoke detected in the LAV?

Answer 25

LAV SMOKE on EICAS

Red alarm and how on smoke detector panel

Question 26

LAV smoke detector is less sensitive to

Answer 26

Cigarette Smoke

Question 27

What blows trash can bottle

Answer 27

Heat melts a plug

Question 28

Is there cockpit warning if trash can bottle blows?

Answer 28

Nope

Question 29

Baggage Smoke detectors….How many?

Answer 29

2

Question 30

Baggage Smoke indications?

Answer 30

BAGG SMOKE on EICAS

BAGG EXTG light overhead lights up

Question 31

What does BAGG EXTG light lit mean?

Answer 31

Smoke detected or fan deactivated

Question 32

What has happened if BAGG EXTG light is lit, but no BAGG SMOKE on EICAS

Answer 32

fan deactivated

Question 33

How many Fire bottles for Baggage, and how are they different?

Answer 33

2, one is quick discharge…one is metered for 50 minutes of discharged They are in rear electronic compartment

Question 34

If smoke no longer detected in baggage what happens?

Answer 34

Fan turns back on, and BAGG EXTG light goes off

Question 35

What does BAGG EXTBTL INOP mean

Answer 35

bottles have been used, or they’re inop

Question 36

What happens when BAGG EXTG is pushed?

Answer 36

Bottles blow, and record fan is turned off