2A6X1 Self Test (Mfe)

The results of an improved TO recommendation include correcting errors, inserting omitted facts, and standardizing improved procedures for all personnel air force wide. This means that by implementing an improved TO recommendation, any errors in the existing procedures can be corrected, any important facts that were previously omitted can be added, and the procedures can be standardized to ensure consistency and efficiency across all personnel in the air force. Therefore, the correct answer is "all of the above".

The purpose of the oil cooler is to cool the oil. This is important because oil can become hot and lose its effectiveness in lubricating and protecting the engine parts. By cooling the oil, the oil cooler helps to maintain its optimal viscosity and prevent overheating, ensuring that the engine operates smoothly and efficiently.

Careless handling of tools during maintenance can cause most nicks and scratches on engine plumbing. When tools are not handled properly, they can accidentally come into contact with the plumbing, leading to scratches or nicks. This can happen when tools are dropped, mishandled, or used with excessive force. Such damage can compromise the integrity of the plumbing system and may result in leaks or other issues. Therefore, it is important to exercise caution and proper tool handling techniques during maintenance to prevent these types of damages.

AFTO form 22 is the correct answer because it is the form used to recommend improvements to Technical Orders (TO's). This form allows individuals to provide feedback and suggestions for improving the TO's, ensuring that they are up to date and effective. It is important to use the correct form for this purpose to ensure that the recommendations are properly documented and considered for implementation.

Dust covers should be installed over open lines rather than in them. This means that the covers should be placed on top of the lines, rather than being inserted inside the lines. Installing the covers over the lines helps to provide a protective barrier against dust and other contaminants, preventing them from entering the lines and potentially causing damage or blockages.

The correct answer is "Both A and B." This means that the functions performed by the air system include normal air flow for combustion surge control and load control, as well as excessive airflow for cooling.

The correct answer is Spray pattern field test. In addition to visual inspection, a spray pattern field test is performed on the t56 engine fuel nozzles. This test helps to ensure that the fuel is being sprayed evenly and in the correct pattern. It is important to verify the spray pattern to ensure proper combustion and fuel efficiency.

The oil is routed to the fuel heater and strainer in order to heat the fuel and cool the oil. This process helps to ensure that the fuel is at the optimal temperature for combustion, while also preventing the oil from overheating. By routing the oil through the fuel heater, it can be warmed up before it enters the engine, improving its efficiency. At the same time, the fuel is cooled down to prevent any potential issues that may arise from overheating.

A fixed test cell is constructed as a brick block building with steel reinforcements. The control room is equipped with a double-safety glass arrangement that allows the operator to view the engine while it is running. Additionally, there are usually two separate doors between the control room and the test bay. Therefore, all of the given options accurately describe the construction of a fixed test cell.

If the special rotator is unavailable, the F100 engine rear compressor can be rotated by turning the PTO (Power Take-Off) on the gear box with a wrench. This method allows manual rotation of the compressor, ensuring that it functions properly. Bumping by hand or motoring the engine are not suitable options for rotating the compressor in the absence of a special rotator.

The ET&D program is an integration of hardware, software, maintenance, and diagnostic processes that are used to qualify and monitor the health of an engine. This program aims to diagnose, monitor, and qualify the engine's health, ensuring that any potential issues are detected and addressed promptly. By implementing this program, unnecessary part and engine changes can be prevented, saving time and resources.

Color coded bands are used to identify hose and tubing systems after installation. These bands are typically placed on the hoses or tubing and are assigned specific colors that correspond to different types of substances or components. This helps in easily identifying and distinguishing between different hoses and tubing systems, ensuring proper usage and maintenance.

The purpose of external flanges on the engine is to serve multiple functions. They are used to attach brackets, which provide support and stability to various components of the engine. They also serve as attachment points for external accessories, such as air filters or cooling systems. Additionally, external flanges can be used to attach support equipment, such as lifting devices or diagnostic tools. Therefore, the correct answer is "All the above" as external flanges serve all of these purposes.

Flightline personnel use ET&D (Engine Trend and Diagnostics) data by collecting raw engine data and transferring it to the base maintenance shop for analysis. This allows for the identification of any potential issues or abnormalities in the engine's performance, which can then be addressed and resolved by the maintenance team. By analyzing the data, flightline personnel can ensure that the engines are operating optimally and make any necessary adjustments or repairs to improve reliability and reduce life costs. Module matching, increasing average ETOW, and eliminating time-based removals are not mentioned in relation to the use of ET&D data by flightline personnel.

The allowable limit for a dent in a straight line is less than 20% of the diameter and not on the heel of a short bend radius. This means that any dent in a straight line should be smaller than 20% of the pipe's diameter and should not be located on the heel of a short bend radius. This is important because dents can weaken the structural integrity of the pipe and may lead to failure or leakage if they exceed the allowable limit.

The load control system consists of multiple components including modulating valve, shutoff valve, load control valve, control pressure regulator, and pneumatic thermostat. These components work together to regulate and control the flow of load in a system. The modulating valve adjusts the flow rate based on the input signal, while the shutoff valve controls the opening and closing of the flow. The load control valve helps in maintaining the desired load level, and the control pressure regulator maintains the required pressure. The pneumatic thermostat senses the temperature and provides input for controlling the load.

Depot and product center engineers and technicians utilize the ET&D program to develop engine trend data and provide support to field users by diagnosing engine performance problems. This means that they use the program to collect and analyze raw engine data, identify any issues or trends in engine performance, and offer assistance to users in resolving these problems. This helps in ensuring the optimal functioning of the engines and identifying any maintenance or repair requirements before the next flight or engine change.

The purpose of an air duct through the inside diameter of the compressor rotor is to form a flow path for pressurizing and cooling air. This allows the air to be compressed and cooled as it passes through the rotor, which is essential for the efficient operation of the compressor. The air duct ensures that the air is properly pressurized and cooled before it moves on to the next stage of the compression process.

The T56 oil system uses pressure and scavenge gear pumps. Pressure pumps are responsible for supplying oil under pressure to various components of the system, while scavenge pumps are used to remove oil from different parts of the system and return it to the oil tank. These two types of gear pumps work together to ensure proper lubrication and cooling of the engine components in the T56 oil system.

18 inch fiberglass acoustialc mats are used in the air inlet duct for silencing. These mats are effective in reducing noise by absorbing sound waves and preventing them from bouncing back into the environment. The thickness of 18 inches allows for better sound absorption and insulation. Foam filled mats and water filled mats are not commonly used for silencing in air inlet ducts.

The combustion chamber is designed to have a long life by implementing two measures: film cooling with CDP air and applying special coatings to the metal. Film cooling involves directing a cool air flow over the surface of the combustion chamber to protect it from the high temperatures generated during combustion. Special coatings are applied to the metal surfaces to provide additional protection against heat, corrosion, and wear. These measures help ensure the longevity of the combustion chamber by reducing the effects of high temperatures and other damaging factors.

HPT (High Pressure Turbine) nozzles are cooled by CDP (Compressor Discharge Pressure) air that bypasses the combustion inner and outer liner. This means that the air used for cooling is taken from the compressor discharge and directed towards the HPT nozzles, bypassing the combustion chamber. This method helps to prevent overheating of the nozzles and ensures their proper functioning.

The modular engine concept offers two advantages. Firstly, it allows engines to be serviced faster as only the specific parts that require maintenance or replacement can be addressed, rather than the entire engine. Secondly, it eliminates the need to return the entire engine to the depot for overhaul, resulting in quicker turnaround times and reduced downtime for the engine.

When the fuel is bypassed the TD (Turbine Discharge) valve on the T56 engine, it is redirected back to the fuel pump. This means that the fuel does not reach the fuel nozzles and instead returns to the pump.

The primary goal of the ET&D program is to prevent or limit damage to turbine engines by early detection of performance degradation or failures. This means that the program aims to identify any issues or potential problems with the engines as early as possible in order to take appropriate action and prevent further damage or failures. By detecting these issues early on, the program can ensure that the engines are operating at their optimal level and minimize the risk of any significant damage or failures occurring.

The leading edge of the propeller blades is protected by a nickel guard. Nickel is known for its corrosion resistance and durability, making it an ideal material for guarding the propeller blades against damage and wear. It helps to prevent any potential damage that could occur during flight, such as erosion or impact from foreign objects.

The bleed air for use by the engine and aircraft is taken from the 5th and 9th stages of the compressor assembly. These stages are specifically designed to provide the necessary amount of air for various purposes such as cabin pressurization, anti-icing, and air conditioning. By taking air from these stages, the engine and aircraft can efficiently utilize the compressed air for different systems and functions, ensuring optimal performance and safety during flight.

Steel tubing has an advantage over aluminum tubing because it can withstand rough handling and high pressure. This means that steel tubing is more durable and can be used in applications where it may be subjected to rough treatment or exposed to high levels of pressure. Aluminum tubing, on the other hand, may be more prone to damage in such conditions.

The HPT (High Pressure Turbine) rotor assembly is subjected to the most stress in the core engine major module. This is because the HPT rotor assembly operates at high temperatures and pressures, and it is responsible for extracting energy from the combustion gases to drive the high-pressure compressor and the fan. The HPT rotor assembly experiences high rotational speeds and is exposed to extreme heat and mechanical forces, making it the component that is most likely to be subjected to the highest levels of stress.

The fan thrust reverser door upright and left sensors send a signal to Channel A of the EEC.

The correct answer is 4. This suggests that there are four linear hydraulic actuators used to deploy and stow the fan thrust reverser.

Vertical baffles are a design feature of the exhaust stack that controls exhaust low-frequency sound in a fixed test cell. These baffles are positioned vertically within the exhaust stack and are designed to disrupt and redirect the flow of exhaust gases. By doing so, they help to reduce the intensity and propagation of low-frequency sound waves, effectively controlling the noise generated by the exhaust system in the test cell.

The F100 has 13 stages of compression.

The horizontal split line of the rear compressor case allows for easy visual inspection of the F110 engine rear compressor rotor blades. This design feature enables technicians to access and inspect the blades without having to disassemble the entire engine. By simply opening the rear compressor case along the horizontal split line, they can visually inspect the rotor blades for any damage, wear, or other issues, ensuring the engine's proper functioning and maintenance.

The correct answer is Number 10 because the question is asking for the size fitting that should be used for a piece of tubing that is 5/8 inch. Number 10 is the closest option to 5/8 inch, indicating that it is the appropriate size fitting for the tubing.

To determine the direction of rotation of the compressor, you would stand at the rear of the engine, facing the intake. This is because the compressor is located at the front of the engine, and the intake is where air enters the engine. By standing at the rear and facing the intake, you can observe the direction in which the compressor blades are rotating.

The thrust reverser control valve controls hydraulic power for actuating both the fan reverser and the core reverser.

The TD amp (Throttle Deceleration amplifier) is the correct answer because it is the component that compares the actual and scheduled TIT (Turbine Inlet Temperature) signals. The TD amp is responsible for adjusting the throttle position based on the comparison of these signals, ensuring that the turbine operates within safe temperature limits. The other options, TD valve and Coordinator, do not perform this specific function.

The fuel control component acts with the td valve to control fuel flow during start in order to prevent overtemp and compressor surge. It ensures that the correct amount of fuel is being delivered to the engine during the start-up process, preventing any potential damage or issues that could occur from an excessive fuel flow.

The reason for having two separate doors between the control room and the test bay is to prevent unwanted noise from entering the control room. This is important because the control room requires a quiet environment for accurate monitoring and communication. Having two doors helps to create a sound barrier and minimize the noise transmission from the test bay to the control room, ensuring a suitable working environment for the personnel inside the control room.

The correct answer is TIT system and TD amp. The TIT system refers to the turbine inlet temperature system, which measures the temperature of the air entering the turbine. The TD amp refers to the turbine discharge amplifier, which amplifies the signal from the TIT system. Therefore, the two elements of the t56 engine thermal couple assembly that are connected to the switch components are the TIT system and TD amp.

Flexible hoses are used instead of metal tubing in some applications because they can be easily fitted to fit an area or application where needed. Additionally, hoses are especially suitable where a great amount of flexibility is needed and where lines are subject to vibration. Metal tubing is subject to corrosion, whereas flexible hoses are not. Therefore, all of the above reasons contribute to the use of flexible hoses in certain applications.

The correct answer is 1st and 2nd. In a turbine section, the stages are numbered from the front to the rear. The first and second stages of the turbine section are responsible for driving the rear (N2) compressor.

Directional references on the engine are used to establish common points of reference. This helps in identifying and locating specific parts or areas on the engine. By having a standardized system of directional references, it becomes easier for technicians and engineers to communicate and work on the engine. It also aids in troubleshooting and maintenance activities, as everyone involved can refer to the same points of reference when discussing or working on the engine.

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The t56 oil tank is pressurized to prevent foaming. When oil is agitated or subjected to high temperatures, it can create air bubbles or foam, which can negatively impact its lubricating properties. By pressurizing the oil tank, the air inside is compressed, reducing the likelihood of foaming. This ensures that the oil maintains its effectiveness in lubricating the engine components and prevents any potential damage that foaming could cause.

The front stator case on the f108 engine serves two purposes. Firstly, it houses the stator vanes, which are stationary blades that help to redirect the airflow and improve the efficiency of the engine. Secondly, it encloses the compressor rotor, which is responsible for compressing the incoming air before it enters the combustion chamber. By enclosing the rotor, the front stator case helps to ensure that the compressed air is properly directed and contained within the engine.

The RGB pressure and scavenge oil system relief valves are set at a pressure of 250psi.

The correct answer is solenoid controlled and air operated. This means that the anti-ice system is controlled by solenoids, which are electromechanical devices that control the flow of air to the anti-ice system. The system operates using air pressure to activate and control the anti-ice functions.

The correct answer is 6th and 8th. These stages are housed in the rear stator assembly.