Fire Protection Flashcards
How many detector loops are there in the engine
2
How is the engine fire system powered
Detection and
Extinguishing
Detection- MAU1( DC ESS bus 1) And MAU3(DC ESS bus 2)
Extinguishing- hot batt bus 1 and 2
What happens when a engine
fire is detected
4
Aural warning
Lights- fire handle and master warning
EICAS- fire warning light in respective ITT INDICATOR
EICAS warning msg ENG 1/2 fire is displayed
What happens when you pull the fire handle
3
Closes
Engine fuel shutoff valve
Engine hydraulic shutoff valve
Engine bleed shutoff valve
How many fire extinguishing bottles are there
- A and B
How do you discharge bottle A
Pull fire handle and rotate counter clockwise
How do you discharge bottle B
Pull fire handle and rotate clockwise
Describe APU fire protection system
Provides fire detection
Extinguishing
And continuos built in test
How is APU fire system powered
Detection
MSU 1 ( DC ESS bus 1) and MAU3 ( DC ESS bus 2)
Extinguishing
DC ESS bus 2
How many detection loops in the APU
2
What happens when APU fire is detected
Aural warning
Master warning light
Red striped bar of APU emergency stop button illuminates
EICAS - warning msg APU fire
What happens when you push the APU fire extinguisher button
Discharges APU bottle
APU FADEC shuts down APU
Closes the APU fuel feed shutoff
Displayed EICAS MSG - APU fired btl disch
Will APU auto shutdown on ground because of fire
Yes after 10 seconds
How many smoke detectors in forward cargo
3
How many smoke detectors in aft cargo
2
What happens with a cargo smoke indication
All.
Aural warning
Lights-
Master warning
Associated cargo extinguishing compartment button illuminates
EICAS
CRG AFT SMOKE
CRG FWD SMOKE
Appropriate bottle is armed
If forward compartment —
air circulation fan turns off and forward ventilation outflow valve closes
Which cargo compartment can hold live animals
Forward
How many bottles for the cargo departments
- One high rate and one slow rate
Both located in center Avionics bay
How long will low rate cargo bottle provide protection
60 mins
How will the cargo bottles discharge
In flight
High rate. Push button once
Low rate will discharge after 1 minute unless you push button sooner
How will cargo bottles discharge
On ground
High rate. Push button
Low rate must push button again
Not automatic
Can you discharge the cargo fire bottles without an EICAS msg
Yes, by pushing the respective button twice
How is lav fire detection provided
One smoke sensor in each ceiling
If smoke is detected in lav what indications
Master warning light
EICAS msg LAV smoke
Alarm in the LAV and flashing red light
Flashing amber light on FA rainbow panel
Does the LAV have fire extinguishing
Yes, In each trash bin
Automatic after a certain temp limit is reached
What does the fire detection system test button do
Tests the engine fire detection
APU fire detection
And CRG smoke detection
What is a successful test of fire detection system
Fire aural warnings sound
Master warning lights flash
Fire extinguisher handle lights steady
Cargo fire extinguisher buttons lights steady
APU fire extinguisher button and upper half of APU emergency stop button illuminates
EICAS msgs (5)
Eng fire 1 Eng fire 2 APU fire CRG aft smoke CRG fwd smoke
EICAS indications
Fire warning light in ITT illuminates
Forward cargo compartment fan turns off and outflow valve closes
What happens if you hold the fire detection button for 10 seconds
APU shutdown
