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The pneumatic system supplies air to various A/C systems through a distribution and supply ducting network. True. False.

The Bleed Monitoring Computers (BMCs) are responsible for controlling the airflow to the engines. False. True.

Engine bleed air is regulated both in terms of pressure and temperature before supplying the pneumatic system. True. False.

The APU bleed air supply is only used during flight operations, not on the ground. False. True.

Leak detection elements are installed along the cold air supply ducts of the pneumatic system. False. True.

The crossbleed valve connects or disconnects the LH and RH pneumatic manifolds. True. False.

In each engine pylon, a single detection loop is monitored for leaks by the respective BMC. True. False.

The crossbleed valve connects the LH and RH pneumatic manifolds. True. False.

HP ground connectors supply air through the two HP ground connectors installed at the top right of the belly fairing. False. True.

he APU bleed valve is pneumatically operated. Tue. False.

The APU BLEED P/B must be set to ON for the BMCs to send an opening command to the ECB. True. False.

Disagreement between the valve position and command triggers an ECAM message. True. False.

What conditions must be met for the APU bleed valve to open?. APU master switch is ON, APU BLEED P/B is ON, No leak detected on. APU BLEED P/B is OFF. Leak detected on RH pneumatic manifold. Leak detected on LH pneumatic manifold.

What is the function of the crossbleed valve?. Regulate cabin pressure. Control APU bleed air flow. Connect or disconnect LH and RH pneumatic manifolds. Monitor APU operation.

How is the crossbleed valve controlled in automatic mode?. Electrically, Automatically. Pneumatically. Manually. Manually.

When is manual control of the crossbleed valve used?. During APU operation. During crossbleed engine start. During automatic control. During normal operation.

How is the leak detection system divided?. Into three sub-systems. Into left and right sub-systems. Into four sub-systems. Into engine and APU sub-systems.

Where are the sensing elements located?. In the cockpit. Along the bleed air network. Along the bleed air network. Underneath the fuselage.

How many detection loops does each BMC monitor?. Two. Three. Four. Five.

What happens if a leak is detected during APU bleed operation?. APU bleed valve closes. Crossbleed valve opens. BMC sends a warning message. Main Engine Start (MES) sequence is initiated.

How are leaks indicated on the AIR panel BLEED P/BSWs?. Green light. Red light. Amber light. Blue light.

How is the potable water system pressurized?. By the bleed air system. By a ground air pressure connection. By a dedicated compressor. All of the above.

What role does the Vacuum System Controller (VSC) play in the potable water system?. Manages the potable water system. Controls the bleed air system. Pressurizes the water system. Monitors water heaters.

Where is the water quantity in the tanks indicated?. On the Engine Display. On the Flight Attendant Panel (FAP) and PWSP. On the Cabin Intercommunication Data System (CIDS). On the Cabin Intercommunication Data System (CIDS).

How is waste transported to the waste tanks in the vacuum toilet system?. By gravitational force. By differential pressure. By manual pumping. By hydraulic pressure.

What role does the Vacuum System Controller (VSC) play in the vacuum toilet system?. Generates necessary vacuum. Controls and monitors the toilet system. Sequences each toilet operation. Indicates waste level on FAP.

How is the waste level in the tanks indicated?. On the Central Maintenance Computer (CMC). On the Flight Attendant Panel (FAP). On the Engine Display. On the Cabin Intercommunication Data System (CIDS).

What does the Flush Control Unit (FCU) do?. Indicates waste level. Sequences each toilet operation. Monitors the vacuum system. Controls the potable water supply.

How is the potable water supplied to the toilet bowls?. From a separate water tank. From the waste tanks. From the potable water system. Directly from ground supply.

When is a vacuum generator used in the toilet system?. When differential pressure is insufficient. During takeoff and landing. When the aircraft is on the ground. During maintenance operations.

How can the A/C Potable Water System be serviced?. Only with electrical power. With or without electrical power. Only by the flight crew. Only on the ground.

To which system is the overflow and venting port of the tanks connected?. The hydraulic system. The bleed air system. The pressurization system. The air conditioning system.

How many potable water tanks are installed in the aircraft?. One. Two. Three. Four.

Where is the potable water stored?. In the galley. In water tanks. In the lavatories. In the cockpit.

What is the role of the Vacuum System Controller (VSC) in the potable water system?. To heat the water. To control and monitor the system. To filter the water. To add chemicals.

Where are the potable water tanks located?. In the cockpit. In the aft cargo compartment. In the wings. In the forward cargo compartment.

Where do the lavatory and galley distribution lines run?. Above the passenger compartment floor. Below the passenger compartment floor. Inside the cockpit. Alongside the fuselage.

How are the lavatory and galley distribution lines protected?. Only shrouded. Only insulated. Shrouded and insulated, or insulated and heated. Unprotected.

What is the function of manual water Shut-Off Valves (SOVs)?. To increase water pressure. To heat the water. To isolate a lavatory or a galley. To monitor water temperature.

Where is the water quantity information displayed?. On the cockpit display. On the passenger screens. On the FAP and PWSP. Only on the FAP.

What happens when the pre-selected water quantity is reached during filling?. The water heater activates. The fill/drain valve automatically closes. The pressure drops. The system shuts down.

How is the toilet waste system divided?. By compartments. By altitudes. By left and right sides. By deck levels.

What initiates the flush sequence in the lavatory?. Pulling a lever. Pushing the flush switch. Activating the water pump. Opening the toilet lid.

What happens if a failure occurs in the flush system. Nothing. An alarm sounds. The system shuts down. A signal is transmitted to the VSC.

What creates the necessary differential pressure for waste movement on the ground?. Cabin pressure. Engine pressure. Vacuum generators. Manual pump.

What action does the VSC take if the vacuum generator overheats?. It increases speed. It shuts down the generator. It increases pressure. It de-energizes the generator.

What tests does the VSC BITE perform?. Power-up and continuous monitoring tests. Heating and cooling tests. Pressure and vacuum tests. Cleaning and flushing test.

What happens when you push the reset pushbutton switch?. The system shuts down. The VSC does a power-up test. The water heater activates. The flush valve opens.

Which system monitors and displays warnings and system information?. FDRS. ECAM. CMS. ACMS.

What is the primary purpose of the Flight Data Recording System (FDRS)?. To monitor engine performance. To record A/C operational parameters for incident investigation. To display warnings. To troubleshoot in real-time.

Which system is responsible for monitoring various systems' BITE data to record system failures?. ECAM. FDRS. CMS. ACMS.

Through which system can aircraft data be downlinked to a ground station?. ECAM. ACARS. MCDU. CMS.

What type of maintenance is done with the help of ECAM and CMS through MCDUs and printed reports?. Long-term maintenance. Short-term troubleshooting. In-depth troubleshooting. None of the above.

Which system assists in long-term maintenance by using ATSU downlinked and downloaded reports or recorded data?. FDRS. CMS. ACMS. ECAM.

In-depth troubleshooting relies on which systems for data analysis?. Only ECAM. Only CMS. CMS and ACMS. Only FDRS.

Which of the following is NOT a possible symptom related to a cockpit effect?. Warning/malfunction + CMS Fault message. Warning/malfunction alone. Fuel level indication. CMS fault message alone.

What type of failures does the Post Flight Report (PFR) give access to?. All failures. Class 1 and 2 failures of CMS monitored systems. Only mechanical failures. Only fuel system failures.

What does the CMS include for short-term troubleshooting?. Central Maintenance Computers. Flight Data Recording System. Flight Warning Computers. Line Replaceable Units.

What safety precautions must be observed before performing operational tests from the cockpit?. Wear safety goggles. Verify oxygen levels. Displayed on the MCDU. Ensure proper ventilation.

What does BITE stand for?. Built-In Test Equipment. Basic Input/Output System. Built-In Test Execution. Board of Internal Test Examiners.

What is the purpose of the power-up tests performed by the BITE?. To check for software updates. To ensure system integrity. To initiate system tests. o activate specific tests.

Which type of test is executed in flight and does not disturb system operation?. System tests. Power-up tests. Cyclic tests. Specific tests.

How many Central Maintenance Computers (CMCs) are provided, and which one is active during normal operation?. One; number one. One; number two. Two; both are active. Two; only number one is active.

What initiates the transfer between the active and standby CMCs?. Maintenance personnel. Pilot intervention. P/BSW. FWC.

What is the operator's interface for the CMS?. MCDU. FDRS. ACARS. ATSU.

How many flights can type-1 systems memorize failures from?. Last 32 flights. Last 64 flights. Last 128 flights. Last 256 flights.

What feature distinguishes type-3 systems from type-1 and type-2 systems?. They have no failure messages. They only memorize failures from the last flight. They have no operational consequence. They generate failure messages.

How are Class 1 failures indicated to the flight crew during flight?. ECAM STATUS page. ECAM WARNING page. ECAM OPERATIONAL page. ECAM MAINTENANCE page.

Where can the maintenance team identify Class 2 failures?. Post-flight report. ECAM STATUS page. MCDU class 2 report. FDRS.

How are Class 3 failures indicated to the flight crew during flight?. They are not indicated. ECAM STATUS page. ECAM WARNING page. ECAM MAINTENANCE page.

What is the primary purpose of the Air Traffic and Information Management System (ATIMS)?. Manage communications. Manage air traffic surveillance. Manage airline operational costs. Manage aircraft navigation.

Which types of data-link communication are enabled by ATIMS?. VHF Data Radio (VDR) and HF Data Radio (HFDR). VHF Data Radio (VDR) and Satellite Communication (SATCOM). VHF Data Radio (VDR) and Controller Pilot Data Link Communications (CPDLC). HF Data Radio (HFDR) and Satellite Communication (SATCOM).

What devices are included in the ATIMS pre-FANS configuration for communication purposes?. SATCOM, VDR, HFDR. VHF Data Radio (VDR), HF Data Radio (HFDR), SATCOM. VDR, HFDR, MCDU. SATCOM, ECAM, MCDU.

How does the cockpit indicate when ATSU router initialization is not completed?. ACARS indication in the STanBY/CouRSe window. Frequency displayed in the ACTIVE window of the RMPs. ATSU message displayed on the ECAM. Dashes shown in the STanBY/CouRSe window.

What parameters are given during ATSU router initialization?. Aircraft Registration Number (ARN) and Airline Identification (A/L IDENT). Aircraft Model and Serial Number. Flight Number and Departure Time. Aircraft Type and Flight Plan.

What communication devices are included in the ATIMS pre-FANS configuration?. ACARS and TCAS. SATCOM, VDR, and HFDR. VDR and EGPWS. VDR and SATCOM.

What crew interfaces are present for FANS-A and FANS-B equipped aircraft?. MCDU only. DCDU and MCDU. ECAM and MCDU. MCDU and attention getter P/Bs.

What does ATIMS enable in terms of data-link communication?. VHF Data Radio (VDR) only. HF Data Radio (HFDR) only. Satellite Communication (SATCOM) only. All of the above.

Where is the Auxiliary Power Unit (APU) located in the aircraft?. Pressurized tail cone. Engine nacelle. Fuselage mid-section. Unpressurized tail cone.

What are the primary functions provided by the APU?. Electrical power and pneumatic supply. Hydraulic pressure and air conditioning. Avionics cooling and engine lubrication. Fuel pumping and hydraulic pressure.

What controls and monitors the operation of the APU?. Air Traffic Control (ATC). Flight Management System (FMS). Electronic Control Box (ECB). Engine Control Unit (ECU).

What happens to the APU air intake flap when the APU master switch is selected OFF?. Opens. Closes. Adjusts its position to 45 degrees. Remains in the current position.

How does the ECB monitor the oil level status of the APU?. Through an electronic sensor. By visual inspection. By analyzing oil samples. Through pressure readings.

What does it indicate if the "OIL LEVEL: LOW" message is displayed on the APU SERVICE DATA page of the CMS?. The oil level is at its minimum. The oil level is sufficient. The oil level needs checking. The oil level allows for 60 hours of operation.

What should be done prior to servicing the APU oil?. Disconnect the oil hoses. Open the APU access doors. Start the APU. Drain the existing oil.

Which procedure is most commonly used for APU oil servicing?. Pressure fill procedure. Gravity fill procedure. Vacuum fill procedure. Automated fill procedure.

How should the oil filler cap be handled during the gravity fill procedure?. Tighten it immediately after adding oil. Loosen it slowly to release pressure. Remove it completely before adding oil. Shake it to remove excess oil.

The Auxiliary Power Unit (APU) is located in the pressurized zone of the aircraft. True. False.

The APU provides electrical power for the aircraft systems only when the aircraft is on the ground. True. False.

The load compressor diffuser collects static pressure from the compressed air. True. False.

What are the functions of the engine compressor?. Increase air pressure, Guide air into the combustion chamber. Cool the air, Convert air into electrical energy. Increase fuel efficiency, Generate rotational movement. Convert rotational energy, Supply fuel to the pneumatic system.

What components support the rotating parts of the load compressor?. FWD roller bearing, Aft ball bearing. Lubricated outer race, Deswirl vanes. Inlet guide vanes, Scroll. Impeller, Diffuser.

Where is the main start contactor installed?. In the APU box. In the aft underfloor compartment. In the waste tank area. On the lower RH side of the APU.

What is the purpose of the ignition unit?. To create high voltage electrical pulses for igniter plugs. To control the oil temperature. To measure the APU speed. To monitor the exhaust gas temperature.

The gearbox has a total oil reservoir capacity of 10.5 liters. False. True.

The ignition unit operates on a voltage input of 10 to 30V DC. False. True.

What components are found within the gearbox?. Gravity fill port and pressure fill port. Oil level sight glass, Electrical chip detector. Low oil quantity switch. All above.

How is the gearbox cooled internally?. Oil is supplied to the cooling fan pad and starter motor pad. Air is blown over the gearbox. Water is circulated through the gearbox. The gearbox is cooled by the surrounding air.

Which component is used to detect low oil temperature?. Low oil temperature sensor. Oil heater. Electrical chip detector. Air/oil separator.

What is the purpose of the flow divider?. Divides fuel into primary and secondary flows. Controls the quantity of fuel supplied. Filters the fuel. Monitors fuel temperature.