Fire Protection

Question 1

If an engine fire warning occurs and subsequently that warning ceases (either because of crew actions or not), what is the next step that should be taken?

Answer 1

Test the fire warning system

Question 2

What must be done to pull an engine fire handle if there is no warning?

Answer 2

Press the button underneath the handle

Question 3

What happens when an engine fire handle is pulled?

Answer 3

Fuel shutoff valve - closes
Hydraulic shutoff valve - closes
Generator - offline

Question 4

Which fire bottle is used if a fire is detected in the APU and the APU FIRE DISCH switch is used?

Answer 4

The left (number 2) bottle

Question 5

Which fire bottle is discharged when rotating the fire handle to the “DISCH 1” position?

Answer 5

The right (number 1) bottle

Question 6

How often should the flight crew check the handheld fire extinguishers?

Answer 6

Every preflight

Question 7

Where is the fuel shut off when a fire handle is pulled?

Answer 7

At the respective main fuel feed shutoff valve in the main wheel well

Question 8

Where are the hydraulics shut off when the fire handle is pulled?

Answer 8

Aft equipment area, next to the reservoir

Question 9

How is a loss of gas pressure in the APU fire detector loop indicated?

Answer 9

An “APU FIRE DETECT FAIL” CAS message

Question 10

How is an increase of gas pressure in the APU fire detector loop indicated?

Answer 10

An “APU FIRE” CAS message

Question 11

Can the aircraft be dispatched with a disabled engine fire detector loop?

Answer 11

Yes, if the faulty loop is turned off

Question 12

A normal APU fire test on the ground should produce what indications?

Answer 12

5 red lights, 3 amber lights:
Red - APU Fire Test Switch light
Red - “FIRE” - on APU Panel
Red - Master Warning x2
Red - “APU FIRE” CAS
Amber - Master Caution x2
Amber - “APU FIRE DETECT FAIL” CAS

Question 13

Would the APU FIRE message cause the APU to shut down in flight or on the ground?

Answer 13

Yes to both

Question 14

What are the correct indications for an engine fire detection fault test?

Answer 14

8 amber lights:
Amber “FIRE DETECTION LOOP FAULT” CAS
2x Master Caution + 2 chimes
Test Switch
The fault legends in all 4 of the L/R LOOP A&B switches

Question 15

What are the correct indications for an engine fire test?

Answer 15

8 Red Lights:
Red “L or R ENGINE FIRE” CAS
Red “L or R ENGINE FIRE LOOP ALERT” CAS
2x Master Warning - 3 chime
L or R engine test (split loop A/B) switch - 2 lights
L or R Fire T-handle
L or R fuel control switch

Question 16

What are the correct indications for a smoke detection test?

Answer 16

Red “ AFT BAGGAGE SMOKE” CAS

Question 17

What are the correct indications for an equipment overheat test?

Answer 17

6 lights:
Red “L/R PYLON HOT” CAS (2)
Red “L-C-R AFT FLOOR HOT” CAS (3)
Red “AFT EQUIPMENT HOT” CAS (1)

Question 18

When an engine fire occurs, why is the fire handle turned towards the affected engine (extreme position)?

Answer 18

This action will discharge the #1 bottle, saving the #2 bottle for the engine and APU

Question 19

How would you know if a fire bottle was empty or low on pressure?

Answer 19

An amber “L or R FIRE BOTTLE DISCHARGE” CAS

Question 20

How many fire loops are necessary to trigger a fire warning?

Answer 20

Normally 2, however one will work if the system is reconfigured.