ATA 26 Fire Protection

Question 1

At which resistances will the control unit via the fire wire detect a fire?

Answer 1

500-350 ohm

Question 2

How many overheat detectors are fitted in each nacelle?

Answer 2

3 ea

Question 3

At which temperature do the fire detector sensor indicate the L/R TAN P HOT warning?

Answer 3

232 degrees Celsius

Question 4

Which compartments have smoke detectors?

Answer 4

Avionic rack, Lavatory & cargo bay

Question 5

What happens when you pull the T-handle?

Answer 5

HP bleed valve closes
PRSOV closes
Fuel shut off valve closes
Cancelling fire alarm bell
DC generator shuts down
Opens possibility to ignite cartridges

Question 6

What is the resistor box used for?

Answer 6

To divide and balance the firing current to the cartridges

Question 7

How much are the engine fire extinguishers pressurised?

Answer 7

600 psi

Question 8

At which over pressure will the engine fire extinguisher discharge safely?

Answer 8

1400-1800 psi

Question 9

Waste container melt plug melts at which temp?

Answer 9

70 degrees Celsius