Fire Protection, page 09-10-1

Question 1

What are the 2 subsystems of the fire protection system

Answer 1

Fire/overheat detection ad fire extinguishing

Question 2

What 4 areas does the fire/overheat detection cover

Answer 2

Engines, Jet pipe/pylon, APU and main landing gear

Question 3

What zone does the fire extinguishing system cover, A or B

Answer 3

Zone A, engines and APU

Question 4

What does zone B area consist of…

Answer 4

jet pipe and pylon

Question 5

Does zone B have fire extinguishing

Answer 5

No, just overheat and fire detection

Question 6

How many fire bottles exists

Answer 6

3. Two for the engines and one for the APU

Question 7

Can the fire detection control units discriminate between an true fire/overheat and a short in the heat sensing element

Answer 7

Yes, EICAS will display a fire fail or jet pipe overheat fail

Question 8

What are the 6 things that occur when the ENG FIRE PUSH switch/light is pressed

Answer 8

1. squibs are armed 2. generator shuts down 3. fuel shutoff valves close 4. hydraulic SOV closes 5. bleed air SOV closes 6. ignitor is disabled

Question 9

If a fire or overheat conditions is detected in the APU area what happens

Answer 9

APU automatically shuts down

Question 10

Will the APU fire bottle automatically discharge if a fire is detected

Answer 10

No

Question 11

Can the APU fire detection unit discriminate between a fire and a failure

Answer 11

Yes, EICAS will display APU FIRE FAIL

Question 12

What six things occur when the APU FIRE PUSH switch light is pressed

Answer 12

1. squibs are armed 2. APU shuts down 3. fuel SOV closes 4. Neg-G SOV closes 5. LCV closes 6. Gen shuts down