Sovereign Fire Protection

Question 1

How does the Fire Detection system work?

Answer 1

Tubes around the engines and APU that are filled with an inert gas expands when it is exposed to excessive heat and the pressure inside tube is sensed causing a Fire Warning

Question 2

What happens when you press the Engine FIRE button?

Answer 2

1. Fuel Firewall Shutoff
2. Fuel Shutoff in HMU
3. Hydraulic Firewall Shutoff
4. Generator Field
5. Fire Bottles Arm
6. Respective T/R isolated

Question 3

How many Fire Bottles are there?

Answer 3

2 Engine
1 Baggage / APU
1 Metered Baggage

Question 4

Explain how Fire Protection for the Baggage compartment works

Answer 4

When smoke is detected in the baggage compartment:
1. Red BAGGAGE FIRE CAS / MASTER WARNING / BAGGAGE FIRE PUSH and White SEC BAG BOTTLE PUSH illuminate simultaneously
2. Baggage Heat SOV closes automatically
3. When the BAGGAGE FIRE PUSH light/switch is pushed the BAGGAGE/FIRE BOTTLE (HDR) and the METERED BAGGAGE BOTTLE (MDR) squibs Discharge (180 minutes)
4. The SEC BAG BOTTLE PUSH light/switch is pushed 15 minutes prior to landing
Note: SEC BAG BOTTLE PUSH light/switch begins to flash at FL250 on descent reminding you to push it which increases the MDR to 15 minutes

Question 5

What would happen if you pushed the BAGGAGE FIRE PUSH button?
The SEC BAG BOTTLE PUSH button?

Answer 5

Squibs would fire and agent would be discharged into the baggage compartment with the lights illuminated or not

Question 6

How do you get the full 180 minutes of the Metered Bottle?

Answer 6

Stay between FL330 and FL390

Question 7

What could be the problem if the APU doesn’t start?

Answer 7

1. APU Fire has been detected
2. Fire detect loop failure
3. BAG/APU Fire Bottle Low Pressure

Question 8

On what bus is the Fire Protection System?

Answer 8

EMER Bus

Question 9

Baggage Fire memory item?

Answer 9

Not an immediate action item

Question 10

What CAS message is associated with the HDR bottle?

The MDR bottle?

Answer 10

Cyan FIRE BOTTLE LOW BAG-APU

Cyan FIRE BOTTLE LOW BAG

Question 11

What happens when you push the APU FIRE PUSH button?

Answer 11

APU Discharge Squib is activated, causing an auto Shutdown of the APU

Question 12

When should you turn Baggage Heat OFF?

Answer 12

When you have a single bleed source

Question 13

What does a BAGGAGE FIRE message really mean?

Answer 13

Smoke detected

Question 14

When will an engine or APU Fire Light extinguish?

Answer 14

Temperature below 500F

Question 15

What gas is in the Fire Loop?

Answer 15

Helium

Question 16

Where are the Engine Fire Loops located?

Answer 16

1 surrounds the outer case and accessories

1 is internal

Question 17

Why is there a High and Low Discharge Squib on the Metered Baggage Compartment Bottle?

Answer 17

High for descent and landing, Low for cruise