Fire Prevention/Oxygen Systems Flashcards
How many hand held fire extinguishers are in the airplane?
Two, one in the back right of the cabin and one behind the FOs seat.
What occurs when you push a fire shutoff button?
Closes the respective side fuel and hudraulic fluid shotoff valves. Closes the PRSOVs. Arms the fire extinguisher discharging bottle.
How many engine fire-extinguishing bottles are on the airplane for the engines?
One
When the fire detection system is tested on the power-up checklist what indications will confirm the system is working properly?
VOICE MESSAGE “Fire”; EICAS message “ENG 1/2 FIRE”; FIRE messages in the ITT Field and red light in the shutoff pushbutton.
What does the continued illumination of the engine shutoff pushbutton indicate after completing the Engine Fire procedure and extinguishing the fire bottle?
The overheat/fire on that engine still persists.
What are the three positions of the oxygen supply control knob and their functions?
CREW ONLY: Disables automatic deployment of the passenger oxygen masks
PAX AUTO: enables automatic deployment of oxygen masks when cabin altitude is above 14,700 ft (+/- 300 ft), if the OXYGEN SUPPLY handle is pushed
PAX OVRD: deploys the passenger oxygen masks regardless of cabin altitude, if the OXYGEN SUPPLY handle is pushed
What is the purpose of the auto dilution valve?
When pulled, the flight crew will breath cabin air, when oxygen supply is not required. When pushed, the flight rew will breath oxygen according to the position of the regulator knob
When will the auto diluter valve automatically close?
In case of cabin decompression. Also, the ADV is capable of closing automatically even without cavin decompresson. (Normally, cabin pressure altitudes from 8,300 to 10,000ft caue the valve to close).
When do the passenger oxygen masks automatically deploy?
14,700 ft (+/-300 ft)
What does a “ CAB ALTITUDE HI” EICAS message indicate?
Cabin altitude is 10,000 ft or higher.
