11.15 Flashcards
If you inspect an oxygen storage bottle and find that the pressure is 75psi which action should you take?
It is possible to recharge the bottle in situ.
No additional information.
You inspect an oxygen bottle and find that the pressure reads 1680psi and the normal pressure is 1850psi. Does the bottle need recharging before the flight?
It depends on the air temperature, the relevant charging graph must be consulted.
No additional information.
Where is crew oxygen pressure regulator located?
Close to the bottle to reduce the length of high pressure oxygen piping in the aircraft.
No additional information.
How does a thermal compensator in an oxygen system work?
It takes some of the heat generated during charging and distributes it through a larger volume of oxygen to reduce local heat build up.
No additional information.
When does oxygen flow to the crew oxygen masks?
When the mask is removed from the stowage box.
No additional information.
How can the oxygen flow into a crew oxygen mask be tested without removing the mask from its stowage?
By moving the press to test button and watching the oxygen flow indicator.
No additional information.
When does oxygen flow to the passenger mask system?
When the mask is pulled downward from the passenger service unit.
No additional information.
How can you tell that a chemical oxygen generator has been used?
By checking a temperature sensitive decal on the unit.
No additional information.
If the masks on the passenger oxygen system have been deployed which statement is true?
They have to be re-packed manually.
No additional information.
How can maintenance be carried out on an individual passenger oxygen mask?
The unit can be opened individually using a special tool.
No additional information.
The passenger oxygen system will be required if?
Decompression occurs if flying above 14,000ft.
No additional information.
What would normally activate the passenger oxygen system?
A pressure switch which senses cabin pressure (cabin altitude)
Example sentence: The passenger oxygen system is activated automatically when the cabin pressure drops.
How can a chemical oxygen generator be checked to see if it has been operated?
There is a colour indicator which changes colour if the generator has been used.
No additional information.
In a gaseous oxygen system how are the masks stowage box latches operated?
Mechanically by an oxygen pressure switch.
No additional information.
Portable oxygen equipment on board is stowed in?
The cockpit, generally near the exits, and in the passenger compartment.
No additional information.
