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42 Cards in this Set
- Front
- Back
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What airplane systems have fire detection/protection
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Engines
APU Cargo Compartments Lavatory |
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Are the cockpit and cabin protected from fire
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Yes
Cockpit-1 hand held fire EXT Cabin-4 hand held fire EXT (2 fwd/2 aft) |
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How are the engines and APU protected from fire
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Engines-2 halon fire bottles
APU-1 halon fire bottle |
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Can both engine fire bottles be used for one engine
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Yes
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What is the power source for engine and APU fire detection/protection
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Engine detection=DC ESS BUS 1 & 2
Engine Protection=HOT BAT BUS APU detection=DC ESS BUSS 1 & 2 APU Protection=DC ESS BUS 2 |
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Describe the engine and APU fire detection system (loops)
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Engine-8 pneumatic fire detectors with 2 loops per engine
APU-2 pneumatic fire detectors with 2 loops |
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Describe the fire test
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Press and hold the test button of the fire panel for at least 3 seconds but no more than 10 seconds
if the APU is running or it will shutdown Observe the following: 6 lights Fire handle 1 and 2 Cargo smoke (FWD) ext button, Cargo smoke (AFT) ext button APU ext button APU emerg. stop (top half) 5 CAS Warnings Eng 1 fire Eng 2 fire Cargo FWD smoke Cargo AFT smoke APU Fire 4 Warnings FIRE on ITT gauge FIRE on ITT gauge Master warning light (left) Master warning light (right) |
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What happens when an engine fire handle is pulled
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Respective:
Engine Bleed SOV closes Engine Hydraulic SOV closes Engine Fuel SOV closes |
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What is an indication of an APU fire
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Fire bell
Red stripe in APU EMER STOP APU FIRE displayed on EICAS |
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Will the APU shutdown if a fire is detected
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Ground only
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What happens if the APU EMER STOP is pushed after a fire is detected
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APU shuts off without the 1 minute cool down
APU fuel SOV closes APU FIRE EXT Button illuminates |
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When will the APU FIRE EXT button illuminate
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-APU EMER STOP button pressed
-One minute after the alarm if no action has been taken |
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Will the APU fire extinguisher automatically discharge
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No
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How many smoke detectors are installed in the cargo compartments
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FWD=3
AFT=2 |
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What happens to the FWD cargo compartment if smoke is detected
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Recirculation fan shuts off
Out flow valve closes |
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Why does the outflow valve close when smoke is detected in the fwd cargo compartment
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Prevent O2 from entering
Prevent halon from escaping |
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How many extinguishing bottles are installed for the cargo compartments
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2 total, 1 high rate and 1 low rate bottle
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What is the difference between the high rate and low rate bottle
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High rate saturates the compartment immediately
Low rate saturates the compartment over time |
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How long will the low rate bottle remain active
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60 minutes
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Can one bottle be used for one compartment and the other bottle for the other compartment
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No
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What happens when a CARGO FIRE EXT button is pressed
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High rate bottle discharge immediately
Low rate discharges automatically after 1 minute if the aircraft is in flight |
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Will the low rate bottle discharge automatically on the ground
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No
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During flight can the low rate bottle be discharged prior to one minute
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Yes, push the button
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How can the low rate bottle be discharged on the ground
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Push the extinguisher button
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Can the cargo extinguisher be used if no smoke is detected
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Yes, the high rate bottle must be pushed twice. Once to arm it and once to discharge the bottle.
The low rate must be pushed twice. Once to arm it and once to discharge it. |
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How long does the low rate bottle take to discharge in flight
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Discharges automatically after 1 minute
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How are the lavatories protected from fire
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There are heat sensitive extinguishers in the waste bins that discharge automatically once a predetermined temperature is reached
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What would happen on the ground if an APU fire was detected and no action was taken
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After 10 seconds the APU would shutdown, a red light bar would illuminate on the APU EMER STOP button, and if no action was taken the red bar would go out after one minute and APU FIRE EXT button would turn red
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Explain how the FWD and AFT CARGO FIRE DETECTION system works to alert the crew
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The FWD section contains 3 detectors. Before the crew is alerted the system runs a 45 second test on the detectors and shutsdown the recirc fan. Two detectors out of the 3 must detect a fire for the crew to be alerted. If not the crew will get a fault message rather than a FWD cargo fire message. The AFT section must have both detectors detect a fire for the crew to be alerted.
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During an engine fire how many loops must detect a fire before the crew is alerted
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2 loops, but if one is inop only one is needed to alert the crew
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When the FA does the LAV fire test what happens after the switch is released
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The test is held for 7 seconds
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What category fire detection system does the 170 have
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Category C
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Where are the engine fire bottles located
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Cente E Bay
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What are the three ways to shutdown the APU
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APU EMER STOP Button
APU FIRE EXT Button OFF Button |
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Which MAU monitors the FWD cargo compartment for fire
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MAU 1
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What MAU monitors the AFT cargo compartment for fire
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MAU 2
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What signals the crew that there is a fire in the lavatory
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If detector goes off the crew will get an EICAS for lave smoke, but there is no message to the crew if the bottle discharges
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What message on the EICAS would be received if the High rate bottle for the cargo fire ext. system discharged
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CARGO FIRE HI DISC
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How many smoke detectors in the FWD CARGO Bay
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3
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How many smoke detectors in the AFT CARGO Bay
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2
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In flight the low rate bottle for a cargo fire will automatically discharge after how long
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1 minute
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On the ground to discharge the low rate bottle the appropriate cargo ext. button must be pressed. What happens if it is not pressed
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If not pressed within 2 minutes after it armed the system will reset. When the fire test button is pressed the system will reset.
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