fire detection/extinguishing

Question 1

what are the fire bottles filled with

Answer 1

halon

Question 2

what are the fire bottles pressurized with

Answer 2

nitrogen

Question 3

how do you know the bottles have thermally discharged

Answer 3

missing red disc on the left of the aircraft

Question 4

what does pulling an engine t handle do

Answer 4

arms system and mechanically sets fuel selector to off

Question 5

if you pull which engine t handle and apu t handle there is what issue

Answer 5

1 eng and apu t handle. it’ll only discharge into the last actuated one

Question 6

what does pulling the APU t handle do

Answer 6

removes electrical power from the apu airframe fuel shutoff valve, letting it close, secures the prime boost pump, signals the dESU to shutdown and arms the system

Question 7

fire detector system interaction with AC power

Answer 7

without AC power we cannot discharge into #2 engine
without AC power, we have to use the reserve bottle for #1 and APU