Operate Fire Protection Flashcards
What happens when I pull the ENG Fire handle? What happens when I rotate?
Anytime the fire handle is pulled it commands the following shutoff valves to close:
-the engine fuel shutoff valve
-the engine hydraulic shutoff valves
-the engine bleed air shutoff valve
-the cross bleed shutoff valve
Each fire handle is associated with one engine
Rotating the FIRE HANDLE counter clockwise discharges extinguisher bottle A into the associated engine. Rotating clockwise discharges extinguisher bottle B into the same engine.
How many halon bottle(s) serve engine fire suppression?
Two
What does the APU Emergency Stop Button do?
Pressing the APU EMER STOP button closes the APU Fuel SOV, shuts down the APU, and lights up the APU fire extinguisher pushbutton
What does the APU Fire Extinguisher button do?
-Discharges the APU fire bottle
-Shuts down the APU through the APU FADEC
-Closes the APU Fuel Shutoff Valve (SOV)
-Displays an EICAS Advisory message APU FIREX BTL DISCH
How many halon bottle(s) serve APU fire suppression?
One fire extinguisher bottle is installed in the rear fuselage
Will the APU automatically shut down for fire? If so, when?
On ground, the APU will automatically shut down 10 seconds after the fire condition is present
How many smoke detectors are in each cargo bin?
Each cargo compartment has an independent smoke detection system. The forward cargo compartment has three smoke detectors. The aft cargo compartment has two smoke detectors.
After smoke detection in the forward compartment, the air circulation fan in the forward compartment automatically turns off and the ventilation outflow valve closes.
How many halon bottle(s) serve Cargo fire suppression?
Two. One high-rate extinguisher bottle and one low-rate extinguisher bottle.
Both extinguisher bottles are installed in the center avionics bay and used in either forward or aft cargo compartment.
How many times do I need to press the Cargo Fire Extinguisher button to discharge the low rate bottle in flight?
After the annunciation of smoke detection in the cargo compartment, pressing the associated cargo compartment button causes:
-the high-rate fire extinguisher bottle to discharge immediately into the selected cargo compartment
-the EICAS STATUS message CRG FIREX HI DISCH to display
One minute later, the second fire extinguisher bottle discharges automatically at a reduced flow rate and the agent remains in the selected cargo compartment for 75 minutes for airplanes with 60-minute diversion time allowed
*Pressing the associated pushbutton before the one-minute period immediately discharges the low-rate extinguisher bottle
How many times do I need to press the Cargo Fire Extinguisher button to discharge the low rate bottle on the ground?
In case of fire on ground, the low-rate fire extinguisher bottle is not automatically discharged. The flight crew must push the cargo fire extinguisher pushbutton once again to discharge the low-rate bottle
How many times do I need to press the Cargo Fire Extinguisher button to discharge the low rate bottle annunicated?
In flight, automatic after 1 minute. On ground, push the button once.
How many times do I need to press the Cargo Fire Extinguisher button to discharge the low rate bottle non-annunciated?
The system can be used even without a cargo smoke warning. In this case, the high-rate bottle is armed by pushing the respective cargo fire extinguisher button and is indicated by the red button light and the associated EICAS message. If the button is pushed again within the next two minutes, the high-rate bottle is discharged. At this time the low-rate bottle is armed. In case the flight crew does not push the button within the next two minutes, the system is reset and the high-rate bottle will not discharge.
In flight, the second bottle will automatically discharge after one minute. On ground, the automatic timer feature for discharge of FIREX LO is disabled, however FIREX LO remains armed and can be manually discharged by depressing the appropriate button.
In flight: High-rate bottle, push the button twice. Low-rate bottle, automatically after 1 minute
On-ground: High-rate bottle, push the button twice. Low-rate bottle, push the button once.
What happens automatically when smoke is detected in the FWD Cargo bin? The aft?
Forward cargo compartment:
-Air circulation fan is turned off;
-The high-rate fire extinguisher bottle is armed and;
-The forward cargo compartment ventilation outflow valve is commanded closed
Aft cargo compartment:
-The high-rate fire extinguisher bottle is armed
Can I fight a fire in the engine with the airplane turned off? The APU? The Cargo compartments?
*Did not verify answer
Engines: yes
APU: no
Cargo: no
Briefly explain how a LAV SMOKE EICAS message would appear
If smoke is detected in either forward or aft lavatory by its dedicated fire protection system
If smoke is detected in either lavatory:
-the master WARNING lights illuminate
-the EICAS WARNING message LAV SMOKE is displayed
-In the lavatory where the smoke has been detected an alarm sounds and the smoke detector light comes on
-A flashing orange light on the respective attendant lights panel (rainbow lights) illuminate
