Crj Fire Detection Systom

Question 0

Which system have dual loop.

Single loop protection?

Answer 0

Dual…engines, jet pipe and pylons apu

Single…main landing gear

Question 1

What systems have detection and/or extinguishing?

Answer 1

Engines
Jet pipe pylons
Apu
Main landing gear

Question 2

What systems have smoke detection and extinguishing?

Answer 2

Cargo…two detectors, two extinguish

Lavatory…one detector, one ext.

Question 3

What is the advantage of dual loops.

Answer 3

Minimizes false warnings

Increases dispatch ability

Question 4

Can both bottles be discharged into one engine.

Answer 4

Yes bottles are armed for whichever engine was pushed.

Question 5

What is the purpose if loop a and b switches on overhead fire panel.

Answer 5

To isolate the loops for dispatch ability.

Question 6

What does pushing the lh or rh eng fire push light do?

Answer 6

Arms both squibs
Fuel feed sov closes
Bleed air sov closes
Hydraulic sov closes
Gen is tripped offline

Question 7

What is the difference with an apu fire on ground vs in flight?

Answer 7

On the ground the apu shuts down and after 5 secs apu fire bottle discharges

In flight apu shuts down but does not discharged bottle.

Question 8

What does pushing the apu fire push switch light do?

Answer 8

Arms both squibs
Apu fuel feed sov closes
Shuts down apu
Apu lcv closes
Apu gen trips off

Question 9

What does pushing the cargo smoke push switch light do?

Answer 9

Fan stops
Recirc sov closes
Heater shuts down
Ac sov closes
Exhausted sov closes