Smoke/Fire Protection

Question 1

What does it mean if a red discharge disc is missing from left wing root?

Answer 1

Thermal discharge indicator. Blown out by extinguishant escaping to atmosphere via a thermal relief plug on each bottle. (Thermal discharge of fire bottle)

Question 2

What does it mean if the yellow discharge disc is missing from the left wing root?

Answer 2

System discharge indicator. It’s ejected in response to the pressure of extinguishant being released from either bottle through the discharge outlet ports (Discharge via the extinguishing system).

Question 3

What type of fire detection and protection is available in the lavatory?

Answer 3

• A smoke detector provides visual and audible warnings.
• An automatic, heat activated, fire extinguisher is located in the lavatory garbage container compartment.

Question 4

How many portable fire extinguishers are on board the aircraft?

Answer 4

At least 4 fire portable fire extinguishers are on board.

• 1 in the flight deck
• 1 in the galley emergency equipment cupboard (upper)
• 2 in the rear emergency equipment cupboard

Question 5

How many smoke detectors are installed in the cargo compartment?

Answer 5

2 (roof and aft face)

Question 6

What are the memory item drills for the SMOKE Master Warning?

Answer 6

• Oxygen Masks…..On/100%
• Smoke Goggles…..On
• Mic Switch…..Mask
• Recirc Fans…..Off

Question 7

The fire loop responder units and control circuits are powered by what buses?

Answer 7

Essential Bus [Left essential DC Bus: No. 2 fire detector loop B/No. 1 fire detector loop A] [Right essential DC Bus: No. 1 fire detector loop B/No. 2 fire detector loop A]

Question 8

How is a loop fault indicated?

Answer 8

Loop fault results in illumination of the appropriate loop fault warning light. 2 lights exist for each nacelle. A CHECK FIRE DET warning is also presented.

Question 9

What are the cockpit indication of an engine fire?

Answer 9

• Both ENGINE FIRE - PRESS TO RESET master fire warning lights illuminate
• One of two pull fuel off handles on the fire protection panel illuminates
• CHECK FIRE DET warning
• Master Warning
• Fire bell.

Question 10

What are the cockpit indications during an engine fire test?

Answer 10

Can test one engine at a time.

• MASTER WARNING flashing
• CHECK FIRE DET warning
• Both ENGINE FIRE lights flashing
• FUEL OFF handle light
• FAULT A and B lights
• Fire bell rings

Question 11

Will the ‘Check Fire Detect’ warning flight illuminate when a loop fault is detected?

Answer 11

Yes

Question 12

During flight, you notice the “FAULT B” light has illuminated, QRH action will require?

Answer 12

Loop Select Knob …….. Set to non-illuminated fault position

So Set Loop Selection to A

Question 13

Three things that happen when the fire “T” is pulled:

Answer 13

• Closes fuel (Lights) and hydraulic shut-off valves
• Arms Estinguisher System
• Turns on Extinguisher Arm Lights

Question 14

What do the amber fire bottle lights indicate?

Answer 14

That the squib is charged, armed and ready to be fired.

Question 15

Where are the two engine fire bottles located?

Answer 15

Left wing root fairing

Question 16

The engine fire bottle discharge circuits receive power from which Bus?

Answer 16

The Battery Powered Bus

Question 17

What type of fire protection does the cargo compartment have?

Answer 17

• 2 Smoke detectors
• 1 Smoke curtain

Question 18

APU Fire Protection

Answer 18

• Fully Automatic
• If fire is detected, the FIRE warning light on APU protection panel, APU caution light and CHECK FIRE DET warning light are illuminated.
• APU will autmatically shut down, FUEL VALVE/CLOSED light comes on, extinguisher automatically discharges, if not, use EXTG switch.