Fire CBT's

Question 1

How many fire bottles for the APU?

Answer 1

1

Question 2

How many fire bottles for the engines?

Answer 2

4 total, 2 in each wing

Question 3

How many fire bottles for the cargo compartments? (not main deck, but below the main deck. The cargo compartments.)

Answer 3

4 total between aft and forward

Question 4

What happens when you pull an engine fire switch?

Answer 4

· Closes the related engine and spar fuel valves.

· Closes the related engine bleed air valve.

· Trips off the related engine generator.

· Shuts off hydraulic fluid to the related engine driven
hydraulic pump.

· Depressurizes the related engine driven hydraulic
pump.

· Arms both related engine fire extinguishers.

Question 5

What causes the engine fire extinguisher switches to unlock automatically?

Answer 5

-Detection of a fire
-Fuel control switch to CUTOFF

Question 6

What happens to the APU if an APU fire is detected?

Answer 6

It is automatically shut down.

On ground: Also blows extinguisher
In flight: No extinguisher is automatically blown

Question 7

What happens when you pull the APU fire switch?

Answer 7

· Arms the APU fire extinguisher bottle.

· Closes the APU fuel valve.

· Closes the APU bleed air valve.

· Closes the APU air inlet door.

· Trips the APU generator field and generator breaker.

· Shuts down the APU, (if it is not automatically shut down when a fire is detected).

Question 8

What happens when you arm a FWD or AFT cargo fire bottle?

Answer 8

• Turns off two packs
• Arms lower cargo compartment fire
extinguishers
• Configures equipment cooling to override
mode and turns off all airflow
and heat into lower cargo compartments
• Closes master trim air valve

Question 9

What happens when you press the main cargo deck fire armed switch?

Answer 9

· Turns off two (2) packs.

· Configures equipment cooling the closed-loop mode.

· Turns off all airflow to the main deck.

· Turns off all airflow and heat to lower the cargo compartments.

Question 10

What happens when you press and hold the FIRE/OVHT test button?

Answer 10

· Sends Fire/Overheat test signals to the
engine, APU, wheel well, cargo, and bleed
duct leak detectors.

· The fire bell rings

· The APU fire warning horn sounds (on the
ground)

· The EICAS message TEST IN PROG is
displayed.

· The master WARNING lights, engine fire
warning lights, APU fire warning light, FWD
and AFT cargo fire warning lights, Main Deck
Fire Warning Light, and fuel control switch fire
warning lights illuminate.

Question 11

How many fire detection loops per engine?

Answer 11

2

Question 12

How many overheat detection loops per engine?

Answer 12

2

Question 13

For an engine, both loops must detect a fire or overheat to activate a fire or overheat condition. True or false

Answer 13

True (unless a single loop is failed. then the system works off of only 1 loop)

Question 14

How long does the fire bell last until you cancel the master warning?

Answer 14

1 second on, 10 seconds off continuously until you cancel the alarm.

Question 15

Is there fire detection for the APU? What about overheat detection?

Answer 15

Yes, there is fire detection.

No overheat detection.

Question 16

What is Firebane? How many bottles?

Answer 16

It is a liquid based fire retardant used to extinguish and cool battery fires and magnesium fires. 1 bottle onboard (1quart)