Leak Test Gaseous Oxygen System 2

Question 1

What kind of gaseous oxygen must be used to service an aircraft oxygen system?

Answer 1

Only aviators breathing oxygen.

Question 2

What is a continuous-flow oxygen system?

Answer 2

An oxygen system that continuously flows a metered amount of oxygen into the mask

Question 3

What is a pressure-demand oxygen system?

Answer 3

An oxygen system that flows oxygen to the mask only when the wearer of the mask inhales

Question 4

What identification must be stamped on an oxygen bottle carried in an aircraft?

Answer 4

The identification DOT 3AA or DOT 3HT, the date of manufacture, and the date of all hydrostatic tests

Question 5

To what pressure, and how often should DOT 3HT oxygen cylinders be hydrostatically tested, and when should they be retired from service?

Answer 5

They should be tested to 3 083 psi every three years and retired from service after 15 years or 4,380 pressurizations, whichever occurs first