Fire Protection and Overheat

Question 1

What indications will show when running the Fire System test?

Answer 1

-6 loop lights
-FIRE DETECTOR LOOP Annunciator
-APU FIRE Annunciator light
-Master Warning lights (2)
-Master Caution lights (2)
-Both ENG FIRE handle lights
-Engine fire aural warnings:
*fire bell sounding
“FIRE LEFT ENGINE”
“FIRE RIGHT ENGINE”

Question 2

What happens when you pull the FIRE handle?

Answer 2

• silences the fire bell
• arms fire bottle squibs
• GCR tripped (opens)
• Pneumatic X-feed valve closes
• Hyd shutoff valve closes
• Fuel shut off valve closes

Question 3

Which items wouldn’t reset with the FIRE handle pushed back in?

Answer 3

• GCR

- Pneumatic X-feed valve

Question 4

What indications do we get with an APU fire warning?

Answer 4

• APU LOOP A/B lights
• FIRE DETECTOR LOOP annunciator
• Master Caution
• Red APU FIRE annunciator
• Master Warning
• aural horn and “APU FIRE” for 3 cycles