A 320 SiSTEMas Air Condition

The correct answer is LGCIU, ADIRU FMGS, and EIU. Prezurization controllers receive inputs from the LGCIU (Landing Gear Control and Interface Unit), which is responsible for controlling the landing gear system. They also receive inputs from the ADIRU (Air Data Inertial Reference Unit) FMGS (Flight Management and Guidance System) and the EIU (Electronic Interface Unit), which provide important data for the aircraft's navigation and flight management.

During the exterior preflight on a warm day, it is expected to find the avionics ventilation system INLET and EXTRACT valves to be in the "Open" position. This is because on a warm day, the avionics ventilation system needs to be open to allow fresh air to enter and circulate within the aircraft, preventing overheating and maintaining optimal conditions for the avionics equipment. Closing the valves would restrict the airflow and could potentially lead to overheating and malfunctioning of the avionics system.

RAM AIR ON is selected in the event of dual pack failure or smoke removal. This means that if both packs, which are responsible for cooling the aircraft cabin, fail or if there is smoke in the cabin, the RAM AIR ON option should be selected. This option allows outside air to be directly supplied to the cabin for cooling and ventilation purposes. It is important to note that RAM AIR ON should not be selected when additional cooling is required on the ground or when pack temperatures are too high.

When the pressurization system is in automatic mode and the ditching push button is selected, all valves below the water line are closed. This is done to prevent water from entering the aircraft through these valves in the event of a ditching or water landing. By closing these valves, the pressurization system helps to maintain the integrity of the aircraft's structure and prevent water from flooding the cabin. Additionally, closing the APU INLET valve ensures that water does not enter the auxiliary power unit, which could cause damage. The avionics cooling valves are not closed in this scenario, as they are not located below the water line.

The function of the ram air valve is to provide emergency smoke removal and ventilation while the aircraft is on the ground. This valve helps to remove smoke from the cabin during emergency situations, ensuring the safety and well-being of passengers and crew. Additionally, it also assists in providing ventilation to the cabin while the aircraft is on the ground, improving air circulation and comfort for those on board.

There are three rotary temperature selectors on the A 320, with each selector corresponding to a specific zone - the cockpit zone, the forwards cabin zone, and the aft cabin zone.

The maximum altitude associated with the pressurization system is 39,100 feet. This means that the pressurization system is designed to maintain a comfortable cabin pressure up to this altitude. At higher altitudes, the air becomes thin and lacks oxygen, which can be uncomfortable or even dangerous for passengers and crew. Therefore, the pressurization system is crucial in ensuring a safe and comfortable environment inside the aircraft at high altitudes.

When the APU BLEED is ON and the Engines Bleed switches are ON with the engine running, the position of the engine bleed valves is closed. This means that the engine bleed air is not being used to provide air supply to other aircraft systems.

PACK FLOW to HI is selected when there is a need for increased air circulation in the aircraft cabin. This is particularly useful in situations such as smoke removal or when the cabin becomes hot and humid. By selecting PACK FLOW to HI, the air conditioning system increases the airflow, helping to remove smoke or improve the comfort level in hot and humid conditions. This option would not be selected solely based on passengers complaining about cold temperatures or when the aircraft is flying above FL 350.

The limitation associated with the ram air valve is that it should not be opened if the cabin pressure is greater than 1 psi. This means that the valve should only be opened when the cabin pressure is below 1 psi, as opening it under higher pressure could lead to potential issues or malfunctions.

The pack flow selector has two functions. Firstly, it allows the pilot to increase pack flow but does not allow a manual decrease by the aircraft demand when using a single pack. Secondly, it always allows high flow regardless of switch position when the APU is used for air conditioning. Therefore, both options A and B are correct.

The correct answer is "Closed". When the avionics ventilation system is closed while airborne with no abnormals present, it means that the system is not allowing any outside air to enter or circulate within the avionics compartment. This helps to prevent the entry of smoke or fire into the compartment, ensuring the safety of the avionics equipment and reducing the risk of any potential damage or malfunctions.

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There are three trim air valves in total. Each valve is designated for a specific zone: one for the cockpit zone, one for the forward cabin zone, and one for the aft cabin zone.

In the event of a loss of the bleed system pressure, the pack valves need to be closed. This is because the pack valves control the flow of conditioned air from the aircraft's engines into the cabin. If the bleed system pressure is lost, it means that there is no source of air to condition and supply to the cabin. Therefore, closing the pack valves will prevent any loss of conditioned air and maintain the integrity of the aircraft's cabin environment.

The correct answer is "Eng bleed air and recirculation air, or if selected APU bleed air and recirculating air." This means that the different sources of air for air-conditioning and pressurization in an aircraft can be either engine bleed air and recirculation air, or if chosen, APU (Auxiliary Power Unit) bleed air and recirculating air. The engine bleed air is taken from the engine compressors, while the APU bleed air is taken from the aircraft's auxiliary power unit. Recirculation air refers to the air that is already inside the cabin and is filtered and mixed with fresh air to maintain a comfortable and safe environment.

Pack Flow HI is automatically selected when the APU is supplying bleed air and one pack fails. This means that if there is a failure in one of the packs that provide air conditioning to the aircraft, the system will automatically switch to Pack Flow HI to ensure that the remaining pack is able to maintain the desired airflow and temperature in the cabin. This is done to ensure passenger comfort and safety during the flight.

During engine start, the pack flow control valves automatically close. This is because the pack flow control valves regulate the flow of air conditioning and ventilation to the aircraft cabin. Closing these valves during engine start helps to prevent the ingestion of foreign objects into the engine, as well as to ensure that the engine receives an adequate amount of air for combustion. Therefore, it is necessary for the pack flow control valves to automatically close during engine start.

Pressurization occurs during takeoff because as the aircraft gains altitude, the air pressure outside the aircraft decreases. To ensure a comfortable and safe environment for passengers and crew, the cabin needs to be pressurized. This is done by regulating the air pressure inside the cabin to a level that is suitable for breathing. Pressurization helps prevent hypoxia and other physiological effects of high altitude. Therefore, pressurization is necessary during takeoff to maintain a comfortable and safe cabin environment.

The correct answer is the inflight ECAM cruise page and the CAB PRESS page. These are the two ECAM pages where pressurization indications can be found. The inflight ECAM cruise page provides information about the current cruise phase of the flight, including pressurization parameters. The CAB PRESS page specifically focuses on the cabin pressurization system, displaying relevant information and alerts related to cabin pressure. Therefore, these two ECAM pages are the ones where pilots can access pressurization indications.

The ram air valve must be manually activated. This means that it does not open automatically and requires human intervention to operate. The ram air valve is a device that allows outside air to enter the aircraft's ventilation system. It is typically used during ground operations or in-flight when additional ventilation is needed. However, unlike the other options mentioned, it does not open automatically and needs to be manually activated by the pilot or crew.

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Placing the Blower push button to override de-energizes the blower fan. This means that the blower fan will stop running when the button is pushed. This could be useful in certain situations where the blower fan needs to be turned off temporarily or if there is a malfunction that requires the fan to be shut down for safety reasons.

The hot air valve push button controls the hot air manifold.

Placing the Extract push button to override ensures that the extract fan will continue to be energized. This means that the fan will keep running and functioning properly. It is important to have the extract fan energized in order to maintain proper ventilation and remove any smoke or fumes from the avionics system.

When the temperature selector rotary knob is adjusted, a signal is sent to the zone controller requesting a different temperature. This signal prompts the zone controller to make the necessary adjustments to the HVAC system in order to achieve the desired temperature. This could involve opening or closing dampers, adjusting fan speed, or activating heating or cooling elements, depending on the system configuration and the desired temperature change.

The correct answer is one zone controller that passes information and instructions to two pack controllers for three zones. This means that there is a single zone controller responsible for controlling the cabin and cockpit condition air. It communicates with two pack controllers, which are in charge of controlling the air conditioning systems for three different zones.

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The correct answer is "Only the Cabin Press." This means that the indications for the avionics ventilation system can only be found on the Cabin Press page of the ECAM. It is not available on the inflight ECAM cruise page or the CAB PRESS pages.

The correct statement is that recirculating fans draw cabin air to the mixing unit where conditioned air is added. This means that the air inside the cabin is circulated and brought back to the mixing unit where it is conditioned before being distributed to each zone.

There are two pressurization controllers installed on the A320 aircraft. These controllers are independent of each other and both operate in the automatic mode.

The correct answer is "Yes, manually set landing elevation using the LND ELEV AUTO selector." This means that on the A 320, you can manually adjust the landing elevation by using the LND ELEV AUTO selector. This allows the pilot to override the automatic pressurization system and manually set the desired landing elevation.