Oral: Fire Detection/Protection Questions Flashcards
Know
What airplane systems have fire detection and protection?
- Engines
- APU
- Cargo Compartments
- Lavatories
Are the cockpit and cabin protected from fire?
- Yes
- Cockpit 1 hand-held Halon fire extinguisher
- Cabin 3hand-held Halon Fire extinguishers (1fwd.& 2 aft); one water extinguisher (aft, aircraft right)
How are the engines and APU protected from fire?
- Engines 2 Halon fire bottles
* APU 1 Halon fire bottle dedicated to the APU only
Can both engine fire bottles be used for one engine if needed?
Yes
What is the power source for engine and APU fire detection and protection?
- Engine Detection DC ESS
- Engine Protection HOT BATT
- APU Detection DC ESS
- APU Protection DC ESS
Describe the engine and APU fire detection system
- Engine 8 pneumatic fire detectors (2 loops) per engine
* APU 2 pneumatic fire detectors (2 loops)
Describe the fire test:
- -Button Press-
- Aural warnings
- Visual indications
a) Overhead panel
b) Glareshield
c) EICAS
- Button
• Press and hold the test button on the overhead panel for a min of 3 secs, but no more than 10 secs if the APU is running or it will auto shutdown the APU - Aural
• Fire bell
• Triple chime
3.Visual
a) Overhead panel
•Fire handle 1
•Fire handle 2
•Cargo smoke (FWD) extinguisher button
•Cargo smoke (AFT) extinguisher button
•APU extinguisher button
•APU EMER STOP (top half of button)
b) Glareshield
•Master warning light (left)
•Master warning light (right)
c) EICAS
•ENG 1 FIRE (CAS message)
•ENG 2 FIRE (CAS message)
•CARGO FWD SMOKE (CAS message)
•CARGO AFT SMOKE (CAS message)
•APU FIRE (CAS message)
•FIRE(Engine 1 ITT gauge)
•FIRE(Engine 2 ITT gauge
What happens when an engine fire handle is pulled?
- Closes respective engine fuel SOV
- Closes respective engine hydraulic SOV
- Closes respective engine bleed SOV
What is an indication of an APU fire?
- Fire bell
- Red stripe in the EMER STOP button
- APU FIRE is displayed on the EICAS
Will the APU automatically shut downif a fire is detected?
Only on the ground
What happens if the APU EMER STOP button is pushed after a fire has been detected?
- APU shuts off immediately without a 1-minute cool-down
- APU fuel SOV closes
- 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 the APU fire extinguisher automatically discharge?
No
How many smoke detectors are installed in the cargo compartments?
- 3 detectors in the FWD compartment
* 2 detectors in the AFT compartment
What happens to the forward cargo compartment in the event smoke is detected?
- Recirculation fan shuts off
* Ventilation outflow valve closes