10 Cabin Atmosphere Control Systems
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| show | with the test date, DOT number, and serial number stamped on the cylinder near the neck.
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| show | Pressure test with water.
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| show | alternately turns the fuel on and off, a process known as cycling.
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| How is the cabin pressure of a pressurized aircraft usually controlled? | show 🗑
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| What is ventilating air used for on a combustion heater? | show 🗑
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| show | oxygen
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| show | 24 years or 4,380 filling cycles.
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| The evacuation of a vapor-cycle cooling system removes any water that may be present by | show 🗑
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| What type of oil is suitable for use in vapor-cycle cooling system? | show 🗑
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| show | Expansion turbine.
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| An aircraft pressurization cycle is normally considered to be | show 🗑
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| The cabin pressure control setting has a direct influence upon the | show 🗑
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| show | provide for augmentation of airflow in some areas of the aircraft.
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| show | hydrostatically tested within the proper time interval.
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| In a high-pressure oxygen system, if the pressure reducer fails, what prevents high-pressure oxygen from entering the system downstream? | show 🗑
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| show | A volume storage capacity about three times that of compressed oxygen and system generators that are inert below 400°F, even under severe impact.
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| show | Delivery air duct check valve.
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| show | Cabin altitude.
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| show | When the user breathes.
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| In a freon vapor-cycle cooling system, where is cooling air obtained for the condenser? | show 🗑
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| If a high-pressure oxygen cylinder is to be installed in an airplane, it must meet the specifications of the | show 🗑
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| show | barometric pressure, cabin altitude, and cabin rate of change.
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| The point at which freon flowing through a vapor-cycle cooling system absorbs heat and changes from a liquid to a gas is the | show 🗑
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| When servicing an air conditioning system that has lost all of its freon, it is necessary to | show 🗑
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| The air-cycle cooling system produces cold air by | show 🗑
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| show | all connections checked for leaks.
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| show | outflow valve.
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| show | Evaporator coils.
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| show | changes to phosgene gas.
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| The function of the condenser in a freon cooling system is to | show 🗑
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| What is the purpose of pressurizing the aircraft cabin? | show 🗑
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| The purpose of a subcooler in a vapor-cycle cooling system is to | show 🗑
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| show | main landing gear operated switch.
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| show | Low-pressure vapor.
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| How is the cabin pressure of an aircraft maintained in flight? | show 🗑
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| What is the condition of the refrigerant as it enters the evaporator of a vapor-cycle cooling system? | show 🗑
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| The cabin pressurization modes of operation are | show 🗑
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| What is the condition of the refrigerant as it leaves the condenser of a vapor-cycle cooling system? | show 🗑
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| show | Oil seepage.
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| show | Prevent excessive loss of refrigerant oil.
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| show | in the expansion valve and stop the entire system operation.
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| show | continuous-flow and pressure-demand types.
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| show | is at least 99.5 percent pure and is practically water free.
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| Which is considered a good practice concerning the inspection of heating and exhaust systems of aircraft utilizing a jacket around the engine exhaust as a heat source? | show 🗑
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| show | Continuous-flow system.
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| In the combustion heater, combustion air system, what prevents too much air from entering the heaters as air pressure increases? | show 🗑
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| For use in pressurized aircraft, which is generally the least complicated and requires the least maintenance? | show 🗑
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| If oxygen bottle pressure is allowed to drop below a specified minimum, it may cause | show 🗑
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| show | 15 years or 10,000 filling cycles whichever occurs first.
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| When charging a vapor-cycle cooling system after evacuation, the low-pressure gauge fails to come out of a vacuum. What is indicated? | show 🗑
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| When an aircraft's oxygen system has developed a leak, the lines and fittings should be | show 🗑
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| show | High-pressure vapor.
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| show | Negative pressure relief valve.
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| What does a steady stream of bubbles indicate when servicing a vapor cycle air conditioning system? | show 🗑
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| show | lower the temperature of the cabin air.
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| How often should standard weight high-pressure oxygen cylinders be hydrostatically tested? | show 🗑
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| show | Air bubbles in the sight glass disappear.
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| show | Pressure relief valves.
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| show | Control the supply of hot, cool, and cold air.
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| show | a source of compressed air, heat exchangers, and a turbine.
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| What component in a vapor-cycle cooling system would most likely be at fault if a system would not take a freon charge? | show 🗑
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| In an operating vapor-cycle cooling system, if the two lines connected to the expansion valve are essentially the same temperature, what does this indicate? | show 🗑
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| show | condenser.
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| If the cabin rate of climb is too great, the control should be adjusted to cause the | show 🗑
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| Turbine engine air used for air conditioning and pressurization is generally called | show 🗑
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| show | maintain the desired cabin pressure.
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| show | green color and the words AVIATOR'S BREATHING OXYGEN stenciled in 1-inch white letters.
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| Which best describes cabin differential pressure? | show 🗑
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| show | Teflon tape.
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| The function of an expansion valve in a freon cooling system is to act as a metering device and to | show 🗑
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| Which section of a turbine engine provides high pressure bleed air to an air cycle machine for pressurization and air conditioning? | show 🗑
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| show | inadequate airflow through the evaporator.
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| What unit in a vapor-cycle cooling system serves as a reservoir for the refrigerant? | show 🗑
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| show | air cycle air conditioning.
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| show | aviation breathing oxygen has had all the water vapor removed.
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| The position of the thermostatic expansion valve in a vapor-cycle cooling system is determined by temperature and pressure of the | show 🗑
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| On transport category aircraft what might be an indication of an over pressure event of the aircraft oxygen system? | show 🗑
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| If the liquid level gauge in a vapor-cycle cooling system indicates a low freon charge, the system should | show 🗑
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| show | Vertical with the outlet at the bottom.
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| show | regulate airflow in relation to cabin altitude when in diluter demand position.
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| At which component in an air-cycle cooling system does air undergo a pressure and temperature drop? | show 🗑
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| show | Moisture.
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| What component might possibly be damaged if liquid refrigerant is introduced into the low side of a vapor-cycle cooling system when the pressure is too high or the outside air temperature is too low? | show 🗑
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| What controls the amount of oxygen delivered to a mask in a continuous-flow oxygen system? | show 🗑
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| What is used in some oxygen systems to change high cylinder pressure to low system pressure? | show 🗑
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| The purpose of the dump valve in a pressurized aircraft is to relieve | show 🗑
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| show | Read the pressure gauge mounted on the cylinder.
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Created by:
Jack Mollohan