Fuel System And Power Plants

The correct answer is 3, APU, external air cart or crossfeed start from an operating engine. This means that there are three sources available to start the engines: the APU (Auxiliary Power Unit), an external air cart, or crossfeed start from an operating engine. These options provide different ways to supply air to the engines for starting purposes.

The "REVERSER" light on the overhead panel indicates that the reverser is commanded to stow, but it has not yet stowed. The light will remain on for 10 seconds unless there is a fault in the reverser system, in which case it will stay on. This light serves as a warning to the pilot that the reverser has not fully retracted after landing.

The correct answer is that with the EEC switch ON, the EEC has automatically switched into soft alternate mode. This means that the Engine Electronic Control (EEC) system has detected a fault or abnormal condition and has automatically switched to a backup mode known as soft alternate mode. In this mode, the EEC will continue to provide limited engine control and protection functions, allowing the aircraft to continue operating safely until the issue can be resolved.

Fuel bypass valves are installed in the event of a fuel pump failure in both the No 1 and No 2 tanks (main tanks). This means that if the fuel pump fails in either of these tanks, the bypass valve will allow fuel to continue flowing to the engines from the other tank. This ensures that the engines continue to receive fuel and can operate normally, even if one of the main tanks experiences a fuel pump failure.

When N1 or N2 exceeds the operating limit, the indication on the N1 and N2 gauges changes to red.

The engine starter cut-out N2 speed is 56% N2. This means that once the N2 speed of the engine reaches 56%, the starter is automatically disengaged.

The manuel de-fueling valve selector is located outboard of the no 2 engine.

The fuel "IMBAL" alert displays when there is an imbalance of 453 kgs between the main tanks. This means that the amount of fuel in one main tank is 453 kgs more or less than the other main tank. The alert is designed to notify the pilot of this imbalance so that appropriate actions can be taken to correct it and ensure proper fuel distribution.

The engines get their fuel supply from the main tanks 1 and 2, via suction bypass valves. This means that even in the event of a loss of all AC electrical power, the engines are still able to draw fuel from the main tanks using these valves. This ensures that the engines continue to receive fuel and can continue to operate during the flight.

When both the crossfeed switch and valve are open, the "VALVE OPEN" light will illuminate. The light is described as "dim blue."

The EEC (Electronic Engine Control) provides limit exceedance protection for both N1 and N2. N1 and N2 refer to the rotational speeds of the engine's compressor sections. The EEC monitors these speeds and ensures they do not exceed the predetermined limits. If the N1 or N2 speeds exceed the limits, the EEC takes corrective actions to prevent any damage to the engine. This protection is crucial for maintaining the engine's performance and safety during operation.

The N2 compressor is the correct answer because it is responsible for compressing the air that enters the engine and is essential for the combustion process. The rotation of the N2 compressor shaft is crucial for starting the engine and initiating the airflow necessary for the engine to function properly.

When the No 1 tank is approximately 50% empty and its forward fuel pump is ON, the fuel scavenge pump operates to transfer the fuel into the No 1 main fuel tank.

The indication that a thrust reverser has fully deployed is a green "REV" indication above the N1 display and free movement of the reverse thrust lever. This means that the thrust reverser is in the fully deployed position and ready to be used for reverse thrust.

The shut off system operates automatically when each tank is full during re-fuelling. This means that once the fuel level reaches its maximum capacity in each tank, the system will automatically shut off to prevent overfilling.

When the "OIL Filter BYPASS" light illuminates, it indicates that the main oil filter (scavenge filter) is about to bypass. This means that the oil is not being filtered properly and contaminants may be circulating in the engine. It is important to address this issue promptly to prevent any damage to the engine.

When the main tank fuel pumps are selected to OFF, the "LOW PRESSURE" lights will illuminate, indicating that there is low pressure in the fuel system. Additionally, the "MASTER CAUTION" and "FUEL" system annunciator lights will also illuminate, alerting the flight crew to the issue. This is the correct answer as it accurately describes the indications that would be observed on the flight deck in this situation.

The correct answer is "Impending filter bypass." The illumination of the fuel "FILTER BYPASS" light indicates that there is a potential or imminent bypass of the fuel filter. This means that the fuel may not be properly filtered before reaching the engine, which can lead to potential issues or malfunctions. It serves as a warning sign for the need to address the filter bypass situation to ensure proper fuel filtration.

The engine and IDG lubrication oil provides engine fuel heating. This is because the lubrication oil is circulated through the fuel/oil heat exchanger, which heats the fuel before it enters the engine. This helps to prevent fuel freezing and ensures proper combustion in the engine.

The correct answer is the no 1 tank. The fuel temperature indicator is used to measure the temperature of the fuel in the aircraft's tanks. In this case, it specifically reads the temperature of the fuel in the no 1 tank.

A flashing EGT (Exhaust Gas Temperature) digital display during an engine start on the ground indicates that the Engine Electronic Control (EEC) has detected an impending hot start. This means that the temperature of the exhaust gases is rising too quickly, which could lead to potential damage to the engine if not addressed. The EEC monitors various parameters during engine start to ensure a safe and efficient start-up process.

The correct answer is that a "CONFIG" alert on the center tank fuel quantity indicator means that the center tank contains 726 kgs or more, and both center tank pump outputs are below limits. This alert is indicating the specific configuration of the center tank fuel quantity and pump outputs.

Each engine contains 2 high energy AC systems.

The correct answer is when the flaps are in the landing configuration or the engine anti-ice is ON. This means that when the aircraft is in the final stages of landing, with the flaps extended, or if the engine anti-ice system is activated, the approach idle will be automatically selected. This is done to ensure that the aircraft is in the appropriate configuration for landing and to provide the necessary power settings for a safe approach and landing.

The HMU engine fuel shutoff valve is controlled by the engine start levers and engine fire switches. These controls allow the pilot to start and stop the engine, as well as activate the fire suppression system if needed. By manipulating the start levers and fire switches, the pilot can control the flow of fuel to the engine, ensuring safe and efficient operation.

When the engine start lever is at IDLE, both igniters are activated. This means that both igniters will be providing a spark to ignite the fuel-air mixture in the engine for a smooth start.

When the ignition is selected to L or R and the Engine Starts Switch is in the OFF position, the ignition will be activated automatically when a rapid decrease in the N2 is detected, which indicates a flameout. This means that if the engine's rotational speed decreases rapidly, indicating a loss of power, the ignition system will automatically activate to try to restart the engine and prevent a flameout.