F15 Engine Run GP

When the finger is raised, it means that the finger is no longer in contact with the motor. This allows the motor to start cooling down because there is no longer any friction or resistance from the finger. Therefore, the cooling time for the motor starts when the finger is raised.

If the ambient temperature is 7 degrees Celsius or below, it is recommended to set the engine heat switch to ON. This is because turning the engine heat switch on helps to warm up the engine and prevent it from freezing in cold temperatures. By keeping the engine heat switch on, the engine will stay at a suitable temperature for optimal performance and prevent any potential damage caused by extreme cold weather conditions.

Engine light-off is indicated by a rise in FTIT. FTIT stands for Fan Turbine Inlet Temperature, which is the temperature of the air entering the fan turbine section of the engine. When the engine is shut off, there is no more fuel being burned, leading to a decrease in EGT (Exhaust Gas Temperature) and PGM (Pressure and Gas Monitoring) values. However, the FTIT may rise momentarily after engine shutdown due to residual heat in the engine. Therefore, a rise in FTIT indicates engine light-off.

If the fuel low light comes on, it is important to shut down the engines to prevent causing engine damage. Continuing to operate the engines with low fuel can lead to fuel starvation, which can cause the engine to stall or even suffer from permanent damage. Shutting down the engines allows for a safe inspection of the fuel level and prevents any further complications. Monitoring the fuel quantity or resetting the circuit breaker may not address the immediate issue of low fuel and could potentially worsen the situation.

To stabilize the engine before shutdown, it is normal to run it at IDLE for 5 minutes. This allows the engine to cool down gradually and prevents any sudden temperature changes that could potentially damage the engine components. Running the engine at IDLE also helps to circulate oil and fuel, ensuring that they are evenly distributed throughout the engine before it is turned off. This practice is commonly followed in order to maintain the longevity and performance of the engine.

The correct answer is "OFF" because setting the starter switch on the engine control panel to "OFF" will shut down the JFS (Jet Fuel Starter). This switch is responsible for controlling the power supply to the JFS, and turning it to the "OFF" position will stop the flow of fuel and deactivate the starter. This ensures that the JFS is completely shut down and not in operation.

The correct answer is "right" because in a normal engine starting procedure, the right engine is typically started first. This is because the right engine is typically the "number 2" engine, and starting it first allows for better control and balance during the starting process. Once the right engine is started and stabilized, the left engine can then be started.

The danger area extends out from the intakes to 25-feet when engines are operating. This means that within a radius of 25 feet from the intakes, there is a risk of danger due to the operation of the engines. It is important to maintain a safe distance from the intakes to ensure personal safety and prevent any accidents or injuries.

The SLIPWAY door switch is set to "close" in normal run procedures. This means that the door switch is in the closed position during regular operations.

In normal run procedures, the ejection controls safety lever is set to "EJECTION CONTROLS LOCKED." This means that the lever is in a locked position, preventing accidental activation of the ejection controls. This safety measure ensures that the ejection system is not engaged unintentionally during regular operations, reducing the risk of harm to the pilot or crew members. Therefore, the given answer "True" is correct.

If external power is used, the engine that can be started is the right engine.

To perform a wet engine motor, the engine alternator (ignition) must be disabled. This is because the engine alternator provides the electrical power to ignite the fuel in the engine. By disabling the engine alternator, the ignition system is turned off, preventing the engine from starting and allowing the wet engine motor to be performed safely.

During engine start, the maximum FTIT (Fan Turbine Inlet Temperature) is 680 degrees. This temperature is crucial because it represents the maximum temperature that the turbine blades can withstand without getting damaged. If the FTIT exceeds this limit, it can lead to turbine blade failure and potential engine damage. Therefore, it is important to closely monitor and control the FTIT during engine start to ensure safe and efficient operation.

After the shutdown of avionics, the indicators numbered 16, 17, 18, and 19 must be inspected for any fault indication.

When the RPM is between 45-50 percent, the generator is functioning properly and providing enough power to the electrical system. As a result, the generator light, which indicates a malfunction in the generator, goes out. This suggests that the generator is operating within the desired range and there is no need for further attention or action regarding the generator.

If the light off does not occur within 30 seconds after advancing the throttle to idle on engine start, the first action that should be taken is to abort the start by moving the throttle to off and setting the ENG MASTER switch to OFF. This action is necessary to prevent any potential damage or unsafe conditions that may arise from a failed start.

Anti-personnel guards are not to be used unless a spotter is used when the temperature is 45F or below. This suggests that at temperatures above 45F, it is safe to use anti-personnel guards without the need for a spotter.

In normal run procedures, the LANDING/TAXI LIGHT is not required to be set to ON.

The correct answer is true because in normal run procedures, the L & R INLET RAMP SWITCH is indeed set to EMERGENCY. This is likely done to ensure the proper functioning and safety of the aircraft during the run procedures.

In normal run procedures, the fuel control panel DUMP switch is set to NORM. This means that the switch is in its normal position, indicating that the fuel control panel is operating as intended. This setting allows for proper fuel flow and control during normal operation.

The minimum clearance behind an aircraft while scavenging for engine shutdown is 250ft. This distance is necessary to ensure the safety of personnel and equipment in case of any unexpected events or hazards during the shutdown process. It allows for sufficient space for the aircraft to maneuver and provides a buffer zone to prevent any potential accidents or injuries.

During engine start, the GEN OUT light on the caution light panel will go out at approximately 45 to 50% of N2 RPM.

If the JFS fails to start on the first attempt, it is recommended to wait for 30 seconds before attempting a second start. This waiting period allows the system to reset and resolve any potential issues that may have caused the initial failure. It also gives enough time for any background processes or services to stabilize before making another start attempt. Waiting for 30 seconds increases the likelihood of a successful start on the second attempt.

The maximum FTIT on start is 680C.

When an engine is shut down without a cool down period, it can result in residual heat building up in the engine. This can cause damage to the internal components of the engine. To prevent this damage, the engine should be motored as soon as possible. Motoring the engine means running it without fuel to allow the air circulation to cool down the engine. This helps to dissipate the residual heat and prevent any potential damage. Therefore, the correct answer is "Engine shall be motored as soon as possible."

The correct answer is +/- 1%. This means that the maximum fluctuation in N2 RPM (rotations per minute) at any power setting is plus or minus 1%. In other words, the N2 RPM can vary by a maximum of 1% above or below the target value. This level of fluctuation is considered to be very precise and indicates a high level of control over the engine's performance.

The correct answer is A. 18%. This means that when advancing the throttle to IDLE, it should be done at approximately 18% of the maximum RPM. This suggests that the throttle should be gradually reduced to reach the IDLE position, rather than abruptly moving it to the lowest setting. This allows for a smoother transition and helps prevent stalling of the engine.

If the ambient temperature is 45 degrees Fahrenheit or below, it is necessary to turn on the ENG HEAT switch. This is because the ENG HEAT switch is used to activate the engine heating system, which helps prevent any ice formation on the engine during colder temperatures. Therefore, if the temperature is at or below 45 degrees Fahrenheit, it is important to turn on the ENG HEAT switch to ensure safe operation of the engine.

The factors that determine if JFS accumulators are properly serviced are the ambient temperature, piston position indicator reading, and gas pressure of both accumulators. These factors need to be monitored and maintained within the appropriate ranges to ensure that the JFS accumulators are functioning correctly.

When the finger lift is raised, it indicates that the engine is ready to start. The finger lift is a mechanical device that opens the fuel valve, allowing fuel to enter the combustion chamber. Once the finger lift is raised, the engine can start and the motoring time begins. Motoring is the process of rotating the compressor rotor without ignition to equalize the temperature inside the engine. Therefore, when the finger lift is raised, it signifies the start of the motoring time.

The speed brake switch should be in the "centered" position. This means that the switch should be in the middle or neutral position. This ensures that the speed brake is neither activated nor deactivated, allowing for a balanced and controlled flight. The other options, "rearward" and "forward," would activate or deactivate the speed brake, which is not the desired position for normal flight operations.

The output cockpit pressure indication range for the Left Utility Pump is 2750-3250.

Aircraft operation is not allowed with stores installed and umbilicals connected. Stores refer to external attachments such as missiles or fuel tanks, and umbilicals are cables or hoses that connect the aircraft to external power or equipment. These need to be removed or disconnected before the aircraft can safely operate.

Low frequency vibrations in engines can be caused by imbalances or misalignments within the engine components. These vibrations are generally not harmful to the airframe or engine itself. Increasing or decreasing the RPM (Revolution Per Minute) by a small percentage, such as 5%, can help to counterbalance or adjust the engine's internal forces, thereby reducing or eliminating the vibrations.

To avoid JFS/CGB damage, it is recommended not to engage JFS for more than 90 seconds under normal conditions or 150 seconds under emergency conditions. This is because prolonged operation of the JFS can lead to overheating and potential damage to the system. Therefore, it is important to limit the usage of the JFS within the specified time limits to ensure its proper functioning and prevent any potential harm.

During normal operation procedures, the JFS (Jet Fuel Starter) should not be engaged for more than 90 seconds to avoid damage. Engaging the JFS for a longer period can lead to overheating and potential failure, which can be costly to repair. Therefore, it is important to adhere to the recommended time limit to ensure the proper functioning and longevity of the JFS.

If the JFS (Jet Fuel Starter) does not start after two consecutive tries, the correct action to take is to prime the JFS fuel system. This means that there may be an issue with the fuel supply to the JFS, and priming the system can help to ensure that fuel is properly delivered to the starter. Checking the fuel filters and JFS accumulators may also be necessary, but priming the fuel system is the most immediate and appropriate response in this situation.

During an engine run, it is necessary to ground the aircraft to prevent any potential electrical discharge or static buildup. The grounding point forward of the left inlet is not suitable for this purpose as it is not specifically designed for grounding during engine runs. The left and right pylon grounding points are also not ideal as they may not provide a secure and stable grounding connection. On the other hand, the MLG (Main Landing Gear) grounding points are specifically designed for grounding the aircraft during engine runs. Therefore, either MLG grounding point can be used to effectively ground the aircraft during an engine run.

The canopy must be closed and locked for engine runs above 80 percent N2 RPM. This is likely because at higher RPMs, there is an increased risk of debris or foreign objects being sucked into the engine, which could cause damage or malfunction. Closing and locking the canopy helps to prevent any potential hazards from entering the engine during these high-speed runs.

If the oil pressure goes to zero or no oil pressure is indicated after light-off, it is crucial to shut down the engine within 1 minute. This is because without oil pressure, the engine lacks the necessary lubrication to function properly. Continuing to run the engine without oil pressure can cause severe damage and potentially lead to engine failure. Therefore, it is essential to take immediate action and shut down the engine within 1 minute in such a situation.

During a JFS run, JFS accumulators are not charged. This means that the accumulators, which are used to store and calculate values in a JFS (Job Flow Scheduler) system, do not receive any new inputs or updates during the run. Instead, they retain their previous values and are used for calculations or comparisons as needed. This is true because the purpose of a JFS run is typically to analyze or evaluate a specific set of data or conditions, rather than actively updating or modifying the accumulators.

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During starts and initial operations, the maximum oil pressure is 100psi. This high pressure is necessary to ensure proper lubrication and smooth operation of the engine components, especially during the critical initial stages. Adequate oil pressure is crucial for preventing friction, reducing wear and tear, and maintaining the engine's performance and longevity.

When the engine is operated in the secondary mode, the nozzle position needs to be less than 5%. This means that the nozzle is only slightly open, allowing a small amount of fuel to be injected into the engine. This position is likely used during low power or idle conditions, where less fuel is needed to maintain the engine's operation.

If the JFS LOW light is on, it indicates that the Jet Fuel Starter (JFS) system has low fuel level. In this situation, emergency braking may not be available. The JFS system is responsible for providing power to the aircraft's emergency braking system. Therefore, if the JFS system has low fuel, it may not be able to supply sufficient power for emergency braking, making it unavailable.

The left and right PITOT HEAD HEAT C/B's must be open prior to engine start. This means that the circuit breakers for the pitot head heat on both the left and right sides of the aircraft must be in the "on" position before starting the engine. This is important because the pitot head heat helps prevent ice from forming on the pitot tubes, which could affect the accuracy of the airspeed indicators. By ensuring that the PITOT HEAD HEAT C/B's are open before engine start, the pilot can ensure that the pitot tubes are clear and the airspeed indications are reliable during the flight.

The question asks about the maximum number of drops allowed from any one source per 5 minutes. The correct answer is 1, indicating that only one drop is allowed from any one source within a 5-minute period.

The maximum FTIT at idle in primary mode is 575C.

The normal nozzle position at idle in primary mode is typically between 70-95%. This means that the nozzle is partially open, allowing a controlled amount of fuel to flow into the engine during idle. This range ensures that the engine is receiving enough fuel to maintain a stable idle speed without causing it to stall or run too rich.

The hydraulic pressure of PC1 is between 2750 and 3250.