ENVIRONMENTAL & OXYGEN Flashcards
ENVIORNMENTAL
What is bleed air used for in the ECS system
What is bleed air used for in the ECS system?
Pressurization
Air conditioning
ENVIORNMENTAL
Bleed air off the engine can either be LP air or HP air.
When is HP air used?
Bleed air off the engine can either be LP air or HP air.
When is HP air used?
In flight during idle descents
High altitude flights
ENVIORNMENTAL
The bleed air system is protected by two over-temper-
ature switches and one overpressure switch. These
switches send indications to the EICAS. What tempera-
ture and pressure triggers these safeties?
The bleed air system is protected by two over-temper-
ature switches and one overpressure switch. These
switches send indications to the EICAS. What tempera-
ture and pressure triggers these safeties?
550 F and 50 psi
ENVIORNMENTAL
Which engine does the emergency pressurization
system use?
Which engine does the emergency pressurization
system use?
Right
OXYGEN
Where is the oxygen supply bottle located?
Where is the oxygen supply bottle located?
In the nose section
OXYGEN
What is the normal pressure for the oxygen bottle?
What is the normal pressure for the oxygen bottle?
1,850 psi
OXYGEN
How is an overpressure of the oxygen bottle handled?
How is an overpressure of the oxygen bottle handled?
A blowout metal disc will blow out at 2,500-2,775 psi
OXYGEN
A pressure reducer reduces the pressure of the oxygen
system from the bottle down to ___ psi
A pressure reducer reduces the pressure of the oxygen
system from the bottle down to ___ psi
70
OXYGEN
What type of oxygen masks are on board?
What type of oxygen masks are on board?
“Dixie cups” for the passengers
EROS quick donning for the crew
Therapeutic masks for connection into
the wall outlets
OXYGEN
Where are the crew oxygen masks located?
Where are the crew oxygen masks located?
Side consoles
OXYGEN
How are the passenger masks activated?
How are the passenger masks activated?
Automatically; or
Manually by the crew
OXYGEN
How are the passenger oxygen masks oxygen flow
started?
How are the passenger oxygen masks oxygen flow
started?
Pulling the lanyard
OXYGEN
How many therapeutic oxygen outlets are there?
How many therapeutic oxygen outlets are there?
Two
OXYGEN
How do the crew masks inflate?
How do the crew masks inflate?
Pressing the red touch plates
OXYGEN
How do you select emergency on the crew masks, and
what does this do?
How do you select emergency on the crew masks, and
what does this do?
Rotate oxygen selector counterclockwise, supplies
a slight positive pressure
