2208-oxygen test Word Scramble

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Question	Answer
When an aircraft's oxygen system has developed a leak, the lines and fittings should be?	bubble tested with a special soap solution manufactured specifically for this purpose.
In a high-pressure oxygen system, if the pressure reducer fails, what prevents high-pressure oxygen from entering the system downstream?	Pressure relief valve.
Composite oxygen bottles that conform to DOT-E-8162 have a service life of?	15 years or 10,000 filling cycles whichever occurs first.
In the diluter demand oxygen regulator, when does the demand valve operate?	When the user breathes.
On transport category aircraft what might be an indication of an over pressure event of the aircraft oxygen system?	The green thermal expansion disk missing.
How should you determine the amount of oxygen in a portable, high-pressure cylinder?	Read the pressure gauge mounted on the cylinder.
If oxygen bottle pressure is allowed to drop below a specified minimum, it may cause?	moisture to collect in the bottle.
What may be used as a lubricant on oxygen system tapered pipe thread connections?	Teflon tape.
High-pressure cylinders containing oxygen for aviation use can be identified by their?	green color and the words AVIATOR'S BREATHING OXYGEN stenciled in 1-inch white letters.
What controls the amount of oxygen delivered to a mask in a continuous-flow oxygen system?	Calibrated orifice.
The primary difference between aviation breathing oxygen and other types of commercially available compressed oxygen is that?	aviation breathing oxygen has had all the water vapor removed.
The purpose of the airflow metering aneroid assembly found in oxygen diluter demand regulators is to?	regulate airflow in relation to cabin altitude when in diluter demand position.
Before a high-pressure oxygen cylinder is serviced, it must be the correct type and have been?	hydrostatically tested within the proper time interval.
Oxygen systems in unpressurized aircraft are generally of the?	continuous-flow and pressure-demand types.
What is the main cause of contamination in a gaseous oxygen system?	Moisture.
Oxygen used in aircraft systems is what?	is at least 99.5 percent pure and is practically water free.
In a gaseous oxygen system, which of the following are vented to blow out plugs in the fuselage skin?	Pressure relief valves.
What is used in some oxygen systems to change high cylinder pressure to low system pressure?	Pressure reducer valve.
For use in pressurized aircraft, which is generally the least complicated and requires the least maintenance?	Chemical oxygen generator systems.
Which of the following are characteristics of a chemical or solid-state oxygen system?	A volume storage capacity about three times that of compressed oxygen and system generators that are inert below 400°F, even under severe impact.
If a high-pressure oxygen cylinder is to be installed in an airplane, it must meet the specifications of the?	Department of Transportation.
What test is used to determine the serviceability of an oxygen cylinder?	Pressure test with water.
Which oxygen system employs a regulator that operates only when the user inhales?	Demand-flow system.
How often should standard weight high-pressure oxygen cylinders be hydrostatically tested?	Every 5 years.
To be eligible for recharging, a DOT 3HT oxygen cylinder must have been hydrostatically tested every three years and be retired from service after?	24 years or 4,380 filling cycles.
An aircraft oxygen bottle may be considered airworthy if it has been hydrostatically tested and identified?	with the test date, DOT number, and serial number stamped on the cylinder near the neck.
A contaminated oxygen system is normally purged with?	oxygen.
How pure is aviators 02?	99.5%
Uses a re-breather bag?	Continuous flow system
Regulators lower the psi to?	40-75 psig
demand system is for?	O2 is delivered when user inhales
A green bottle is?	a high pressure cylinder
What is a high pressure cylinders psi?	1850 psi
What is Stenciled on aircraft 02 bottle?	"Aviators Breathing Oxygen" in white 1 inch letters
Lowest psi in cylinder before servicing?	50 psi
the major O2 system contaminate?	moisture
Pressure test with water is called?	Test to verify serviceability of 02 cylinder (Hydro static test)
Controls the amount of 02 flow in a continuous flow mask?	Calibrated orifice
Changes high cylinder psi to low system psi?	Pressure reducer valve
The diluter in a diluter demand system?	mixes supplied O2 with Cabin air
Visual indication of an over psi?	Green blow out plugs on the fuselage.
DOT 3AA cylinder hydro test psi?	3,085 psi
3 components of an aircraft 02 system?	Cylinder, mask, regulator
High psi cylinder psi?	1850 psi or (1800-2000) psi
Portable 02 system used for?	Short and above 10K feet
High storage capacity & low mtc?	Chemical 02 advantages
Not used on commercial flights?	LOX
Vented to the blowout plug?	Pressure relief valve
System in un-psi'd aircraft?	continuous flow and pressure demand types
The purpose of the airflow metering aneroid assembly in 02 diluter demand regulator?	Regulate airflow in relation to cabin altitude
What to do if the system has a leak?	Bubble test with a special
Tape used to aid in sealing and lubricating threads?	Teflon

Created by: Lucas1999