26 Questions
Where are the air conditioning packs located within the Single Aisle family aircraft?
Wing root area
What is the purpose of the pack Flow Control Valve (FCV)?
Adjust flow rate through the pack
How does the ACSC regulate the pack outlet temperature?
Modulates BYPASS VALVE and RAM-AIR INLET
What is the role of cabin recirculation fans?
Reduce bleed air demand and save fuel
How is the temperature regulation system for cabin zones controlled and monitored?
ACSC
The primary function of the air conditioning system is to maintain the correct ________ and temperature within the pressurized compartments of the fuselage.
pressure
Within the Single Aisle family, the air conditioning packs are located in the ________ area, forward of the landing gear bay.
wing root
The main component of each pack assembly in the air conditioning system is the ________ machine.
air cycle
Hot air is supplied to the pack through the pack Flow Control Valve (FCV) from the ________ system.
pneumatic
The ACSC controls the pack outlet temperature by modulating the BYPASS VALVE and the ________ doors.
RAM-AIR INLET
What does FCU stand for in the context of the text?
Flow Control Unit
Which component of the FCU is responsible for managing the ON/OFF function of the FCV?
Solenoid 1
In which scenarios is the trim air PRV solenoid de-energized?
When HOT AIR P/B is set to OFF
How is ventilation air supplied to lavatories and galleys?
From cabin distribution ducts
In the open circuit configuration, under what conditions is avionics equipment cooled with ambient air?
On the ground with increasing skin temperature
What does the Cargo Heating Controller regulate?
Cargo compartment temperature
What does the AFT ISOL VALVE P/B control?
Isolation valves and extraction fan
What action does the HOT AIR P/B switch take when set to OFF?
It closes the pressure regulating valve
What controls the operation of the avionics equipment ventilation system?
Avionics Equipment Ventilation Computer (AEVC)
Which configuration allows cooling of avionics equipment using ambient air?
Open Circuit Configuration
What does the skin exchanger outlet bypass valve help reduce?
Avionics bay noise
What determines the FCV position in the main operating mode?
Flow setting on panel 30VU
In which aircraft conditions is the HIGH FLOW configuration used?
APU bleed air supply for pack operation
What happens if an FCU component malfunctions?
ACSC energizes Solenoid 2, pack enters BACK-UP mode
What does the Mixer Unit do?
Mixes cabin air with conditioned air from packs
Which ACSC manages the forward and aft cabin zones?
ACSC 2
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