Fire Protection

Question 1

Where does the aircraft have fire protection

Answer 1

Engine/ Wheel well
Exhaust pipe
APU

Question 2

How does the fire detection system works

Answer 2

Its is a closed loop system connected to pressure sensing device. The line is filled with gas, the pressure inside the line will increase when it is heated. When the pressure crossed a certain threshold it will activate the warning device in the cockpit

Question 3

How many loops does the aircraft have

Answer 3

6

Question 4

How many smoke detectors does the aircraft have

Answer 4

Pax 4 - 1 and 2 are in the main cabin, 3 is in the lavatory and 4 is in the baggage compartment.
Cargo 4 - all are in the cargo hold

Question 5

How does the smoke detector work

Answer 5

Photoelectric detection
They reset themselves when the smoke clears

Question 6

What is used to extinguish fires

Answer 6

6.5 lbs bottle of halon

Question 7

How many bottes of halon are on board

Answer 7

1 APU
1 In each wing root for the engines
PAX 2 bottles in the baggade compartament

Question 8

How many bottes of halon are on board

Answer 8

1 APU
1 In each wing root for the engines
PAX 2 bottles in the baggage compartment

Question 9

What is the red blowout disc for

Answer 9

To prevent the system from over pressurizing and doing damage to the system. Acts as a relief valve

Question 10

Can you shoot both bottles of halon into one engine

Answer 10

Yes

Question 11

What happens when you pull the Fire T handle

Answer 11

1. Fuel shut off
2. Hydraulic shut off
3. Bleed Shutoff
4. Engine air inlet deice system closes
5. Auto feather
6. Arm squibs

Question 12

What is class C smoke detection

Answer 12

Gives an indication on the panel that there is smoke in the baggage compartment. There are two halon bottles. First is an instant release of all halon to put the fire out. The second is slow release to keep the fire suppressed. It will last 45min-1hour form the time of the button press

Question 13

How many fire detection loops are in each engine

Answer 13

Engine accessories
Wheel well
Tail pipe

Question 14

Can fire extinguisher be discharged when the airplane is not powered

Answer 14

Yes. Fire handle is on a hot battery bus

Question 15

Where does the extinguishing agent discharged

Answer 15

Engine accessory and wheel well

Question 16

When do you see ABLE light, When do you see INOP

Answer 16

ABLE Only during a fire test. INOP when the bottle has low pressure or empty

Question 17

How to test fire detection system

Answer 17

Press TEST, Observe 5 sets of 4 lights (Including the APU)

Question 18

How do you know if fuel and hydraulic shutoff valves are closed

Answer 18

Fire panel light FUEL HYD [CLOSED] lights are lit

Question 19

Why do we put APU SHUTOFF/EXTG switch in CLOSE and not EXTG

Answer 19

To verify CLOED light illuminated. So there is no fuel entering the system

Question 20

If the smoke detection system is activated an the alarm sounds, how is it reset

Answer 20

As the smoke level drops to a safe level, it resets automatically

Question 21

The sensor tube detects an overheat condition by means of

Answer 21

Expention of internal gasses in its core

Question 22

Fire suppression is available in the

Answer 22

Engine area and wheel well area

Question 23

In case of fire, both fire extinguishing bottles can be discharged to either engine

Answer 23

True

Question 24

The APU has both fire detector and fire extinguisher in its compartment

Answer 24

True