Fire Protection Flashcards
What happens when the engine fire handle is pulled?
- Engine fuel shutoff valve closes
- Engine hydraulic shutoff valve closes
- Engine bleed air shutoff valve closes
How are the engine fire extinguisher bottles activated?
- Rotating the fire handle counter clockwise discharges bottle A into the associated engine
- Rotating the fire handle clockwise discharges bottle B into the same engine
How many fire detection loops are in the APU?
2
What happens when the APU fire extinguisher button is pressed?
- Discharges the APU fire bottle
- Shuts down the APU through the APU FADEC
- Closes the APU fuel shutoff valve
- APU FIREX BTL DISCH eicas advisory message
How many APU fire extinguisher bottles are there?
1
When will the APU automatically shut down with a fire condition?
On the ground after 10 seconds with a fire condition present
How many smoke detectors are in the cargo compartments?
- 3 detectors in the front
* 2 detectors in the aft
What automatically happens when smoke is detected in the foreword cargo compartment?
- Air circulation fan is turned off
- FWD fire extinguishing bottle is armed
- Ventilation outflow valve closes
What automatically happens when smoke is detected in the AFT cargo compartment?
The AFT fire extinguishing bottle is armed
After the smoke annunciation what does pressing the cargo compartment button do?
- High rate fire extinguishing bottle discharges immediately
* 1 minute later, second fire extinguishing bottle discharges at a reduced rate
On the ground, will the 2nd fire extinguishing bottle automatically discharge?
No, it must be manually discharged via the pushbutton
Can the fire extinguisher bottles be used without a cargo smoke warning?
Yes, by pushing the cargo fire extinguisher button to arm the bottles and then pushing it again to activate the bottle
How is lavatory smoke detected?
1 smoke sensor installed on each lavatory ceiling
Where is the fire extinguisher located in the lavatory?
1 bottle installed on each waste container
How is the lavatory extinguisher discharged?
Automatically via a heat sensitive blowout plug
