Flashcards in Study Guide Fire Protection Deck (17)
Are the cabin and flight deck protected from fire?
Yes... One hand held halon ext on the flight deck.
Three halon and one water ext in the cabin.
How are the engines and APU protected from fire?
Engines have two halon fire bottles
The APU has one fire bottle.
Both of the engine bottles can be used on one engine or one for one.
What is the power source for the engine and fire protection?
Engine detection DC ESS
engine protection hot batt bus
APU detection and protection on DC ESS
Describe the engine and APU fire detection system.
Engines have eight pneumatic fire detectors. Two loops per engine.
APU has two pneumatic detectors.. Two loops.
Fire test items?
Both fire handle lights
APU EMER shut off button light bar red
Both cargo smoke light bars red
APU bottle light bar
Master warning lights on both sides
Fire bell and triple chime master warning
ENG FIRE 1
ENG FIRE 2
CARGO FWD SMOKE
CARGO AFT SMOKE
FIRE.... on both ITT gauges.
Cargo smoke buttons work how in the air?
In flight with detection... Push once and blows rapid bottle... One minute later the slow leak bottle starts and discharges for one hour...
In flight no detection..... Three pushes..... First arms, second blows fast rate and third blows slow rate.
How do the cargo smoke buttons work on the ground?
With an indication, two pushes... Push one fires the fast rate bottle
Push two fires the slow rate.
Without an indication.... Three pushes.... One arms the high rate bottle... Two blows the high rate bottle an arms slow rate... Three blows the slow rate.
What systems have fire detection and protection?
What happens when a fire handle is pulled?
The fuel shut off valve closes
The hydraulic SOV closes
The bleed air SOV closes.
Indications of an APU fire?
APU FIRE EICAS message
Red stripe light on APU EMER STOP button
Will APU auto shut off with fire indication?
On ground only
What happens if the APU EMER STOP button is pushed after a fire has been detected?
APU fuel SOV closes.
APU shut down immediately without a one minute cool down.
APU FIRE EXTG button illuminates.
What happens if the APU EMER STOP button is not pushed after a fire has been detected?
After one minute the APU FIRE EXTG button illuminates.
Will APU fire bottle discharge automatically?
How many fire detectors are installed I the cargo compartments?
Three in the front and two in the back.
What happens if smoke is detected in the front cargo area?
Recirculation fan shuts off and the ventilation outflow valve closes.
This occurs oxygen from entering the cargo area and halon from escaping and entering he cabin.