Under Pressure....

What valve is modulated to control the level of pressurization in the aircraft pressure vessel?

• Pressure relief valve.

• Outflow valve.

• Safety Valve

• Negative relief valve.

What would happen to the cabin altitude if the dump valve is fully opened in flight at cruising altitude?

• The aircraft would lose cabin altitude.

• Cabin altitude would remain constant.

• Cabin altitude would decrease to flight altitude.

• Cabin altitude would increase to flight altitude.

What valve in the pressurization system prevents the cabin interior from have a pressure that is lower than the outside pressure?

• Distribution valve

• Dump Valve

• Safety valve

• Negative relief valve

In what year did the Wright brothers first flight occur

• 1903

• 1803

• 1925

• 1950

High pressure oxygen cylinders for use in aviation can be identified by their:

• Green colour and the words “Breathing Oxygen” on the outside of the bottle.

• Yellow colour and the words “Breathing Oxygen” on the outside of the bottle.

• Green colour and the words “Danger High Pressure Oxygen” on the outside of the bottle.

• Green colour and the words “Aviator’s Breathing Oxygen” on the outside of the bottle.

What is the ATA chapter for Air conditioning Systems?

• 22.

• 36.

• 21.

• 28.

What is the most common way of de-icing the wings on a commuter category aircraft?

• Electric heaters.

• Hot engine bleed air.

• Combustion heater air.

• Pneumatic deicing boots.

What is the main difference between aviator’s oxygen and other forms of oxygen?

• Aviator’s oxygen is purer than other forms of oxygen.

• Other oxygen has higher levels of moisture content.

• Other oxygen has a lower degree of filtration than other forms of oxygen.

• Aviator’s oxygen has some moisture put into it to make it more breathable.

What maintenance procedure must be carried out when an oxygen cylinder is depleted to empty?

• Removed from the aircraft immediately

• The oxygen cylinder removed from service and purged

• Removed from service and scrapped

• The oxygen cylinder regulator replaced

When filling oxygen cylinders what precaution must be observed?

• All equipment used to service free of oil and filled slowly

• Fill quickly and use only brass tools

• Fill slowly and always use flow multiplier

• Always fill inside a certified clean room