ATA 21- AIR CONDITIONING A320

Where are the air conditioning packs located within the Single Aisle family aircraft?. Aft cabin. Cockpit. Wing root area. Landing gear bay.

What is the purpose of the pack Flow Control Valve (FCV)?. Manage cabin pressure. Control avionics equipment. Adjust flow rate through the pack. Shut-off cabin fans.

How does the ACSC regulate the pack outlet temperature?. Adjusts avionics valves. Modulates BYPASS VALVE and RAM-AIR INLET. Controls cockpit pressurization. Manages cargo compartment ventilation.

What is the role of cabin recirculation fans?. Control avionics temperature. Facilitate cargo heating. Supply cold air to the cabin. Reduce bleed air demand and save fuel.

How is the temperature regulation system for cabin zones controlled and monitored?. Avionics Equipment Ventilation Computer. Cargo Heating Controller. ACSC. RPCU.

The primary function of the air conditioning system is to maintain the correct ________ and temperature within the pressurized compartments of the fuselage. sound. pressure. color. speed.

Within the Single Aisle family, the air conditioning packs are located in the ________ area, forward of the landing gear bay. cockpit. wing root. cargo compartment. avionics.

The main component of each pack assembly in the air conditioning system is the ________ machine. temperature. pressure. avionics. air cycle.

Hot air is supplied to the pack through the pack Flow Control Valve (FCV) from the ________ system. electrical. pneumatic. hydraulic. fuel.

The ACSC controls the pack outlet temperature by modulating the BYPASS VALVE and the ________ doors. cockpit. cargo compartment. avionics. RAM-AIR INLET.

What does FCU stand for in the context of the text?. Flight Control Unit. Flow Control Unit. Fuel Control Unit. Function Control Unit.

Which component of the FCU is responsible for managing the ON/OFF function of the FCV?. Torque Motor. Solenoid 1. Position Sensor. Pressure Sensor.

In which scenarios is the trim air PRV solenoid de-energized?. When duct temperature exceeds 88°C. When system pressure exceeds 6.5 psi. When HOT AIR P/B is set to OFF. During take-off and landing.

How is ventilation air supplied to lavatories and galleys?. From external sources only. From cabin distribution ducts. Through the cockpit. From avionics equipment.

In the open circuit configuration, under what conditions is avionics equipment cooled with ambient air?. While in-flight. When the skin temperature is decreasing. On the ground with increasing skin temperature. On the ground with skin temperature below 12°C.

What does the Cargo Heating Controller regulate?. Ventilation air distribution. Cabin ambient temperature. Cargo compartment temperature. Extraction fan operation.

What does the AFT ISOL VALVE P/B control?. Cargo ventilation controller. Extraction fan in the cockpit. Isolation valves and extraction fan. Cargo heating controller.

What action does the HOT AIR P/B switch take when set to OFF?. It opens the isolation valves. It regulates the trim air valves. It starts the extraction fan. It closes the pressure regulating valve.

What controls the operation of the avionics equipment ventilation system?. Crew intervention. Skin temperature. Aircraft configuration. Avionics Equipment Ventilation Computer (AEVC).

Which configuration allows cooling of avionics equipment using ambient air?. Open Circuit Configuration. Closed Circuit Configuration. Partially Open Circuit Configuration. No configuration allows cooling using ambient air.

What does the skin exchanger outlet bypass valve help reduce?. Avionics bay noise. Skin temperature. Ambient air. Duct temperature.

What determines the FCV position in the main operating mode?. Flow setting on panel 30VU. Differential pressure. Torque motor position. Main operation switch.

In which aircraft conditions is the HIGH FLOW configuration used?. Take-off and landing. Single pack operation. APU bleed air supply for pack operation. Cruise altitude.

What happens if an FCU component malfunctions?. ACSC energizes Solenoid 2, pack enters BACK-UP mode. FCV opens fully. FCU switches to MAIN mode. ACSC energizes Solenoid 1.

What does the Mixer Unit do?. Mixes cabin air with conditioned air from packs. Distributes bleed air to the cabin. Filters recirculated air. Controls differential pressure.

Which ACSC manages the forward and aft cabin zones?. ACSC 1. ACSC 2. Both ACSCs equally. FCU.