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Aircraft Oxygen System Panel Quiz

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Questions and Answers

What is the capacity of each oxygen tank?

123.4 ft3

At what pressure are the oxygen tanks normally pressurized?

1,800 ±50 psi

When does the cylinder regulator vent high pressure relief?

When cylinder pressure exceeds 2775 psig

What is the purpose of the therapeutic oxygen outlet in the cabin interior?

To provide for medical emergencies. Signup and view all the answers

What is the function of the pressure regulator on the oxygen bottles?

To reduce the bottle pressure from the maximum of 1,800 ±50 psi down to a supply pressure of 58-80 psi. Signup and view all the answers

What is the difference between the methods of oxygen delivery for the flight crew and passengers?

The flight crew can be supplied with either supplemental oxygen combined with ambient air, normal 100% oxygen on demand, or emergency pressurized flow of 100% oxygen, while passengers are provided with oxygen to maintain respiration until the airplane is able to descend to an altitude where ambient air is dense enough that oxygen is no longer required. Signup and view all the answers

What is the maximum cabin altitude for use of crew and passenger oxygen masks?

40,000 ft Signup and view all the answers

What is the warning regarding passenger masks and prolonged operation above 34,000 ft cabin altitude?

Passenger masks will not provide sufficient oxygen for prolonged operation above 34,000 ft cabin altitude. Signup and view all the answers

What altitude triggers the automatic switch to positive pressurized flow for the flight crew masks?

35,000 ft. Signup and view all the answers

What is the purpose of the microphone integrated within the breathing area of the flight crew masks?

The microphone is activated by selecting the MIC button on the Audio Control Panel (ACP) to the extended or mask position, and it is used for communication. Signup and view all the answers

What is the purpose of the green plastic disc installed on the skin of the airplane above and forward of the oxygen service panel?

To seal the overpressure discharge vent line of the oxygen system. Signup and view all the answers

Study Notes

Oxygen System

Each oxygen tank has a specific capacity.
Oxygen tanks are normally pressurized to a certain pressure.

Pressure Regulation

The cylinder regulator vents high pressure relief when necessary.
The pressure regulator on the oxygen bottles regulates pressure.

Oxygen Delivery

The therapeutic oxygen outlet in the cabin interior serves a specific purpose.
Flight crew and passenger oxygen masks have different methods of oxygen delivery.
Crew oxygen masks automatically switch to positive pressurized flow at 34,000 ft cabin altitude.

Safety Precautions

Passenger masks are not designed for prolonged operation above 34,000 ft cabin altitude.
A warning is issued regarding the use of passenger masks above this altitude.

Flight Crew Masks

The microphone integrated within the breathing area of the flight crew masks serves a specific purpose.

Aircraft Design

The green plastic disc installed on the skin of the airplane above and forward of the oxygen service panel serves a specific purpose.

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Description

Test your knowledge of aircraft oxygen system panels with this quiz. This quiz covers the functionality, set points, and indication features of the aircraft oxygen system panel, including auto-deployment and manual deployment of passenger oxygen masks.