A320 Sys APU , Doors,Oxigen

The cargo doors are powered by the Yellow Hydraulic system. This system is responsible for providing the necessary hydraulic power to operate the cargo doors. Before engine start, the Yellow hydraulic system is used, while after engine start, the green hydraulic system takes over. The blue electric pump is not mentioned as a power source for the cargo doors.

The illumination of the white slide armed light on the main cabin door indicates that the slide is armed and will inflate if the door is operated from inside the aircraft. This is an important safety feature as it alerts the crew and passengers that the slide is ready for use in case of an emergency evacuation.

When the APU MASTER SW is selected ON, the APU computer automatically starts the APU and completes a self-test. It also opens the air intake flap and supplies fuel pressure. Additionally, it connects the APU generator to the aircraft electrical system.

The correct answer is that the APU can be started at any altitude using normal aircraft power. This means that regardless of the altitude the aircraft is at, the APU can be started up using the regular power source of the aircraft. There is no restriction on the altitude for starting the APU as long as the normal aircraft power is available.

The passenger oxygen masks should drop at approximately 14,000 feet cabin altitude.

A missing green thermal plug during an exterior inspection indicates an oxygen system overpressure or thermal discharge. This means that there might be an issue with the oxygen cylinder, such as it being overpressurized or experiencing a thermal discharge. It is important to address this situation promptly to ensure the safety of the oxygen system and prevent any potential hazards.

The passenger oxygen flow starts when the mask is pulled toward the seat. This action triggers the release of oxygen from the oxygen supply system, allowing passengers to breathe in case of an emergency or a decrease in cabin pressure.

Both options A and B are correct because the APU system page will appear on the ECAM automatically whenever the APU is started and AC power is available. Additionally, the APU system page can also be manually selected by the crew.

The main difference between the crew and the passenger oxygen system is the source of oxygen supply. The crew is supplied with oxygen from an oxygen cylinder, while the passengers are supplied with oxygen from a chemical oxygen generator.

The correct answer is "Yes, there are escape ropes mounted above each window behind an access panel." This answer states that there are escape ropes available above each window, which can be used as emergency exits. This suggests that the flight compartment sliding windows can indeed be used as emergency exits in case of an event requiring evacuation.

The purpose of the CREW SUPPLY push button is to allow the flow of low pressure oxygen to the crew's masks when it is selected ON. This ensures that the crew members have a continuous supply of oxygen in case of any emergency or low cylinder pressure.

The correct answer is that the illumination of the red cabin pressure light represents that the aircraft cabin is still pressurized and the cabin door should not be opened. This is an important safety measure to ensure that passengers do not open the door while the cabin is still pressurized, as it could cause harm to both the passengers and the aircraft.

The flight crew can check the exact pressure of the oxygen cylinder on the DOORS page of the ECAM. This page provides information related to the aircraft's doors, including the status of the oxygen cylinder. By accessing this page, the crew can easily monitor the pressure level of the cylinder to ensure that it is within the required range for safe operation.

When the APU START push button is selected, it will start the APU if the APU MASTER SW (switch) was previously selected on. This means that the APU can only be started if the APU MASTER switch is in the on position. The APU START push button does not directly connect the APU generator to the aircraft electrical system or open the air intake flap and supply fuel pressure. It is solely responsible for starting the APU if the APU MASTER switch is already on.

The APU MASTER SW light will illuminate when an automatic shutdown of the APU occurs. This means that if there is a situation where the APU needs to be shut down automatically, such as due to a malfunction or safety concern, the APU MASTER SW light will turn on to indicate this. It serves as a warning to the pilot or operator that the APU has been shut down automatically and needs attention or further investigation.

The APU GEN push button on the overhead electrical panel is used to control the APU generator. When selected OFF, it de-energizes the APU generator. It is normally left in the lights out position, indicating that it is not in use. Both statements A and B are correct, as they provide accurate information about the function of the APU GEN push button.

When there is an electrical power failure, the cockpit door automatically unlocks. This is a safety feature designed to ensure that the flight crew can easily exit the cockpit in case of an emergency, even when there is no power. By automatically unlocking the door, it allows for quick and easy access to the cockpit, promoting the safety and security of the flight crew and passengers.

The correct answer is "Four cabin, four overwing, and two cargo." This means that the A 320 aircraft has four entrances for passengers to enter the cabin, four emergency exits located over the wings, and two cargo doors for loading and unloading cargo.

The illumination of the SYS ON light indicates that electrical power has been sent to deploy the masks, either manually or automatically. This means that the system is functioning properly and the masks are ready for use in case of an emergency.

When both the APU START push button and the EXT PWR push button are illuminated, it indicates that the aircraft is receiving electrical power from the external power source. The APU is not running in this case, as the engines are off. Therefore, the correct answer is External power.

The correct answer is that the BAT 1 and 2 push buttons must be selected ON in order to start the APU. This means that the batteries need to be turned on to provide power for the APU startup process. The presence or availability of external power does not eliminate the need to turn on the batteries. Both options A and B are not correct because only option A is the correct answer.

Depressing the guarded MASK MAN ON pb will manually send a signal to open the oxygen mask doors. This means that by pressing the button, the person is initiating the process of opening the doors of the oxygen mask, allowing the flow of oxygen to start. This action is done manually and does not involve any automatic signal sent to the chemical oxygen generators. Therefore, option B is the correct answer.

To determine if the cockpit sliding window is closed and locked, the red ring below the release button should not be in view. This indicates that the window is securely closed and locked.

Passenger oxygen generators are designed to produce oxygen for a specific duration in case of an emergency. The correct answer is 20 minutes, indicating that the passenger oxygen generators can supply oxygen for approximately 20 minutes. This duration is crucial as it provides enough time for passengers to breathe safely while the aircraft descends to a lower altitude or makes an emergency landing.