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WorksheetsB777 Air Conditioning
Total questions: 10
Worksheet time: 11mins
What does ATA 21 refer to ?
Avionics Systems
Airframe Structure
Air Conditioning and Pressurization
Landing Gear
Which component is responsible for cooling the bleed air in the air conditioning system ?
Heat Exchanger
Air Cycle Machine (ACM)
Compressor
Bleed Air Valve
Which one of the following is not the source of bleed air for the air conditioning system?
APU (Auxiliary Power Unit)
Engine
Ram Air Turbine (RAT)
Ground Power Unit (GPU electrical)
What role does the pressurization system play ?
Cooling the cabin air
Regulating cabin pressure
Controlling aircraft altitude
Providing fresh air to the cabin
In the Air Conditioning and Pressurization system, what does the term "bleed air" refer to?
Air used for pressurizing the cabin
Air taken from the cabin for cooling
High-pressure air from the engines or apu
Air released during emergency descent
What is the purpose of the air cycle machine (ACM) in the Air Conditioning system of the Boeing 777-200?
Generates electrical power
Cools the cabin air
Pressurizes the cabin
Controls aircraft altitude
Which part of the aircraft is responsible for releasing excess cabin pressure in emergency situations?
out flow valve
cabin temp controller
Emergency Oxygen Masks
Bleed Air Valve
What role does the Recirculation Fan play in the air conditioning system ?
Filters bleed air
Distributes used and filtered air to the cabin
Regulates cabin pressure
Controls engine bleed air
What safety precautions should be observed when accessing the air conditioning compartment for maintenance purposes?
Use of personal protective equipment
Manual pressurization of the compartment
Activation of emergency oxygen masks
Disconnecting the aircraft's power supply
In the event of a trim air valve malfunction, how might it impact the pressurization system?
Loss of bleed air
Inability to control cabin temperature
Limited impact on pressurization
Rapid loss of cabin pressure
