CDC 2a354n Volume 1. General Maintenance Information

The symbols entered in the 781A SYM block may never be erased.

A piece of scrap metal puncturing an aircraft tire is an example of foreign object damage (FOD). FOD refers to any damage caused to an aircraft by foreign objects that are not part of the aircraft itself. In this case, the scrap metal is not a part of the aircraft and its presence causes damage to the tire, which can potentially lead to further issues or accidents.

Cellophane tape can be used to mend a torn page as long as it does not obscure any technical data. This means that the tape should not cover or hide any important information or details on the page. It is important to ensure that the tape does not interfere with the readability or understanding of the content on the page.

FOD (Foreign Object Debris) prevention is a crucial aspect of aviation safety, as even small debris can cause significant damage to aircraft. Therefore, it is essential for everyone involved in aircraft operations on the flight line to take responsibility for FOD prevention. This includes not only maintenance officers and supervisors but also each flying squadron commander. By emphasizing that everyone is responsible for FOD prevention, the answer highlights the collective effort required to maintain a safe and debris-free environment on the flight line.

Yellow tag is used on a new part.

As a maintenance technician, it is important to comply with all written guidance to ensure that all required repairs, inspections, and documentation are completed in a safe, timely, and effective manner. This responsibility ensures that the technician follows the necessary protocols and procedures to maintain the equipment or systems they are responsible for. By complying with all written guidance, the technician can ensure that the necessary repairs and inspections are carried out correctly, minimizing the risk of accidents or failures. Additionally, proper documentation ensures that all actions taken are recorded and can be reviewed for future reference or audits.

When working around electrical circuits, it is important to communicate with your partner and inform them about the specific circuit you are working on. This is crucial for safety reasons as it allows your partner to be aware of the potential hazards and take necessary precautions. It also helps in coordinating actions and troubleshooting if any issues arise during the work. By sharing this information, you can ensure a safer working environment and reduce the risk of accidents or electrical shocks.

The Air Force tries to detect the first signs of hearing loss by periodically testing your hearing. This is because small overdoses to dangerous noise often don't show any outward symptoms. By conducting regular hearing tests, the Air Force can identify any changes in an individual's hearing abilities and take appropriate measures to prevent further damage. This proactive approach allows them to address the issue early on and protect the hearing health of their personnel.

Metal caps should be used on open hydraulic lines because they provide a secure and durable seal. Plastic caps may not be able to withstand the high pressure and temperature of hydraulic systems, leading to leaks or failures. Cloth or rags should not be used as they can easily get caught in the machinery and cause damage. Therefore, metal caps are the most suitable option for effectively sealing open hydraulic lines.

Flightline technicians perform on-equipment maintenance. This type of maintenance involves working directly on the aircraft or equipment while it is still in operation or on the flightline. Flightline technicians are responsible for troubleshooting, repairing, and maintaining various systems and components of the aircraft, such as engines, avionics, hydraulics, and electrical systems. They ensure that the aircraft is in proper working condition and ready for flight. Off-equipment maintenance, on the other hand, refers to maintenance performed in a workshop or hangar, away from the flightline. Organizational and depot maintenance are broader categories that encompass both on-equipment and off-equipment maintenance activities.

Methods and procedures TO's typically begin with a set of instructions or steps that need to be followed. In this case, the correct answer is "00". This suggests that the methods and procedures TO's start with the instructions outlined in option "00".

Air is the most common contaminant found in aircraft hydraulic systems because air can enter the system during maintenance or when there is a leak. Air can cause various issues such as reduced system efficiency, increased wear and tear on components, and decreased overall performance. It can also lead to aeration, which can cause the hydraulic fluid to foam and result in loss of control or system failure. Therefore, it is crucial to regularly check and remove air from the hydraulic system to ensure proper functioning.

If a page is found missing from a TO (Technical Order), it is not valid and must be removed from service. This means that the missing page is essential for the proper functioning or operation of the equipment or system. Without the complete information provided by the missing page, the TO cannot be considered reliable or safe to use. Therefore, it is necessary to remove the TO from service until the missing page is found or replaced to ensure the equipment or system is operated correctly and safely.

To repair pages that have been ripped out of a TO binder, the best option is to use paper reinforcements. Paper reinforcements are small circular stickers that can be applied to the ripped holes on the pages and then reinserted into the binder. This will provide added strength and prevent further tearing or damage to the pages. It is a simple and effective solution for repairing ripped pages in a TO binder.

Personnel who fail to maintain maintenance integrity will be held accountable. This means that they will be responsible for their actions and the consequences that arise from them. It implies that they will be expected to answer for their actions and may face disciplinary measures or other forms of accountability.

The two major categories of maintenance are on-equipment and off-equipment. On-equipment maintenance refers to the maintenance activities performed directly on the equipment or machinery itself, such as repairs, replacements, or adjustments. Off-equipment maintenance, on the other hand, includes activities that are performed outside of the equipment, such as inspections, cleaning, lubrication, or preventive maintenance. These two categories cover the different types of maintenance tasks that need to be carried out to ensure the proper functioning and longevity of equipment.

In the given scenario, if a significant fuel leak developed while a pilot was taxiing an aircraft for take-off, it is likely that maintenance personnel would identify this situation during the end-of-runway inspection. This is because the end-of-runway inspection is conducted just before takeoff and is specifically done to ensure the aircraft is safe for flight. During this inspection, maintenance personnel would visually inspect the aircraft for any visible issues, including fuel leaks. Once the leak is identified, they would then make a determination on how to proceed based on technical guidance.

In the repair cycle, a defective part is typically sent to the back shop. The back shop is a designated area or department where repairs and maintenance tasks are carried out. It is specifically equipped and staffed to handle repairs, ensuring that faulty parts are properly assessed, diagnosed, and fixed. Sending defective parts to the back shop allows for efficient repair processes and helps maintain the overall functionality of the system or equipment.

The three types of maintenance are preventive, scheduled, and unscheduled. Preventive maintenance involves regularly inspecting and servicing equipment to prevent breakdowns. Scheduled maintenance is planned and carried out at specific intervals to ensure optimal performance and identify potential issues. Unscheduled maintenance, on the other hand, occurs unexpectedly to fix sudden breakdowns or malfunctions.

Aircraft hydraulic systems are considered to be very dangerous because they operate at a high pressure of 3,000 pounds per square inch (psi). This high pressure can cause serious injuries or damage if there is a failure or leakage in the system. The high pressure allows for efficient and powerful operation of various aircraft components, such as landing gear, brakes, and control surfaces. However, it also requires strict maintenance and safety measures to ensure the system's integrity and prevent accidents.

When two dissimilar metals are coupled together in the presence of an electrolyte, a galvanic cell is formed. This cell creates a flow of electrons between the metals, causing one metal to act as an anode and the other as a cathode. As a result, the anode metal undergoes corrosion or oxidation, while the cathode metal is protected. This process is known as galvanic corrosion, which can lead to the deterioration of the metals over time.

The objectives of the Aircraft Structural Integrity Program (ASIP) are to establish, evaluate, and substantiate the structural integrity of aircraft structures. This means ensuring that the aircraft structures are strong and capable of withstanding the stresses and forces they will encounter during operation. By conducting thorough evaluations and substantiations, the program aims to ensure the safety and reliability of aircraft structures.

The production superintendent (pro-super) is responsible for flight maintenance production. They oversee and manage the production process, ensuring that maintenance tasks are completed efficiently and on time. They coordinate with the aircraft maintenance unit (AMU) officer in charge, flight chief, and expediter to ensure smooth operations and adherence to maintenance schedules.

When a warning note needs to be entered on an AFTO Form 781A, it should be entered in the discrepancy block. This block is specifically used to record any discrepancies or issues found during inspection or maintenance. By entering the warning note in this block, it ensures that it is properly documented and can be easily identified and addressed. The inspected by block is used to record the name or initials of the person who conducted the inspection, the discovered by block is used to record the name or initials of the person who discovered the discrepancy, and the corrective action block is used to document the actions taken to correct the discrepancy.

The Specialist Section within an AMU includes avionics, propulsion, and electro/environmental technicians. These technicians are responsible for handling and maintaining the specific systems and equipment related to avionics, propulsion, and electro/environmental aspects of the aircraft. They are specialized in their respective fields and play a crucial role in ensuring the proper functioning and performance of these systems.

When the CORRECTED BY block on an AFTO Form 781A is signed, the signature will include the individual's first initial and last name. This means that the person signing the block should only include the first letter of their first name and their full last name.

The personnel in the originating point interact with the originator as required to ensure each DR is valid, accurate, and complete. This means that they communicate with the originator to verify that the DR is based on correct and reliable information, that it is free from errors or mistakes, and that it contains all the necessary and relevant details. By ensuring the DR is valid, accurate, and complete, the personnel can ensure that it can be effectively used and implemented by the recipients at the ALC.

Maintenance manuals typically provide information on system operation, troubleshooting guides, and operational checkout procedures to help technicians maintain and repair aircraft systems. However, instructions for modifying aircraft systems are not typically found in maintenance manuals. These instructions are usually provided in separate documents or manuals specific to the modifications being made to the aircraft.

The correct answer is immediate action, urgent action, and routine action. These three categories of TCTO (Time Compliance Technical Order) are used to prioritize and manage maintenance actions. Immediate action TCTOs are issued for critical situations that require immediate attention to prevent safety hazards or serious damage. Urgent action TCTOs are for important maintenance tasks that need to be completed quickly but may not pose an immediate safety risk. Routine action TCTOs are for regular maintenance and inspections that are part of the standard maintenance schedule. Together, these three categories help ensure that maintenance tasks are appropriately prioritized and completed in a timely manner.

Prior to using the TTU-205 test set, a leak check on the tester must be performed. This is necessary to ensure that there are no leaks or faults in the tester that could affect its performance or accuracy. By conducting a leak check, any potential issues can be identified and resolved before using the test set, ensuring reliable and accurate results during aircraft testing.

Abbreviated TOs, or Technical Orders, are used as work simplification aids for personnel. These abbreviated TOs are temporary guides that provide simplified instructions for tasks until the permanent TOs are published. They are meant to assist personnel in performing their duties effectively and efficiently. These abbreviated TOs are not exclusive to equipment undergoing modifications but can also be used for simple maintenance tasks that are not covered in other TOs.

Short duration exposure to hazardous noise can still be harmful. Even brief exposure to loud noise can cause damage to the ears and potentially lead to hearing loss. It is important to take precautions and protect the ears from any level of hazardous noise, regardless of the duration. Wearing both earmuffs and earplugs can provide the best protection as they help to reduce the intensity of the noise reaching the ears. Noise hazards exist in various directions around operating jet engines, including forward, to the side, and aft. The frequency and level of noise generated by a jet engine can indeed cause permanent hearing loss.

The individual initiates the Report of Survey. This means that it is the responsibility of the individual to start the process of conducting a survey and documenting any loss, damage, or discrepancy in property or supplies. The individual is accountable for reporting the issue and providing necessary information for the survey to be conducted.

In a text of a TO (Table of Contents), changes are indicated by a heavy black vertical line in the outer margin of the page. This line serves as a visual marker to highlight any modifications or updates made to the content. The other options mentioned, such as a black circle with the outer margin of the page, a small black hand pointing to unaffected material, and heavy black index dots in the outer margin of the page, are not commonly used to indicate changes in a TO.

A cannibalization refers to the process of removing parts from one aircraft to be used in another aircraft. The pro-super (Production Superintendent) or maintenance officer is responsible for authorizing this action. They have the authority to determine whether cannibalization is necessary and ensure that it is carried out properly. The maintenance officer works closely with the pro-super to make decisions regarding maintenance and repairs, including cannibalization. Therefore, the correct answer is pro-super or maintenance officer.

The correct answer is "-6." This TO series refers to the inspection requirements for any F-15 aircraft. The other options, "Work Cards," "General Vehicle," and "General System," do not specifically address the inspection requirements for F-15 aircraft.

The correct answer is "by a supplement number, entered in pencil, next to a circled TO paragraph number." This answer suggests that one can determine if a supplement is filed in a TO by looking for a supplement number entered in pencil next to a circled TO paragraph number. This indicates that a supplement has been added to the TO and provides a way to easily identify it.

The purpose of the AN/APM-424 test set is to produce IFF interrogations and display the received replies. This means that it is used to simulate and send out identification requests to other IFF systems, and then receive and display the responses from those systems. It is not used to check the power output of the IFF system, only to generate and receive interrogations and replies. It also does not check the transmitter frequency of the IFF system.

Preventive maintenance refers to the regular and routine actions taken to prevent equipment breakdowns and maintain its optimal performance. It involves conducting inspections, cleaning, lubricating, and replacing parts as needed. In this case, the normal upkeep and preservation of equipment aligns with the concept of preventive maintenance, as it focuses on preventing potential issues and ensuring the equipment's longevity and efficiency.

The responsibility for initiating follow-up action on a TO (Technical Order) change recommendation with a delayed reply rests with the local product improvement manager (PIM). This individual is in charge of overseeing product improvements and ensuring that any necessary changes are implemented. They are responsible for coordinating and initiating the necessary actions to address any delayed replies regarding TO change recommendations.

After removing a LRU (Line Replaceable Unit), it is not necessary to use electrical tape to cover open connectors when high humidity is a problem. This action is not related to the removal of the LRU and can be done independently of it. The other three actions mentioned are directly related to the removal of the LRU and are necessary steps to ensure proper maintenance and installation of the new LRU.

Interim safety supplements are transmitted electronically. This means that they are sent using electronic means such as email or electronic data interchange. This method allows for quick and efficient transmission of the supplements, ensuring that they reach the intended recipients in a timely manner. It also allows for easy storage and retrieval of the supplements, as they can be stored electronically and accessed whenever needed. Transmitting the supplements electronically also reduces the risk of loss or damage compared to other methods such as courier or telephone.

The technician is qualified to sign off a red dash or diagonal when they have completed training on the task and it has been verified and documented in their training records. This ensures that the technician has received the necessary knowledge and skills to perform the task correctly and safely. Graduation from technical school or the technician's personal confidence level are not sufficient indicators of qualification. Being a 7-level indicates a certain level of qualification, but it does not guarantee that the technician has received specific training on the task in question.

The primary cause of electrostatic discharge (ESD) damage to avionic components and equipment is the discharge of static electricity into the equipment connector pins. When static electricity builds up on the surface of the equipment, it can discharge through the connector pins, causing damage to the sensitive electronic components. This discharge can occur when there is a difference in electrical potential between the equipment and its surroundings, leading to a sudden flow of electricity. It is important to properly ground and protect equipment to prevent ESD damage.

The "2" in group 3 of TO number 1U-2S-2-10 designates that the TO is a maintenance instruction.

The correct answer is "list of effective pages check." This term refers to the process of verifying and ensuring that all the pages in a technical order (TO) are up-to-date and accurate. It involves checking each page against a master list of effective pages to identify any discrepancies or outdated information. This helps maintain the integrity and reliability of the TO, ensuring that users have access to the most current and relevant information.

Uniformed etch corrosion causes the metal surface to become rough and sometimes frosted. This type of corrosion occurs when the entire surface of the metal is attacked uniformly, resulting in a loss of material and a rough texture. It is often caused by chemical reactions with the surrounding environment, such as exposure to acids or alkaline substances. This type of corrosion can weaken the metal and affect its appearance.

Isochronal inspections are determined based on calendar days. This means that the inspections are scheduled and performed on a specific day of the calendar, regardless of the number of operating hours, flying hours, or daily intervals. This ensures that the inspections are conducted regularly and consistently, allowing for proper maintenance and safety checks to be carried out on a predetermined schedule.

The correct answer is "bench, shop, and operating." This answer suggests that stock items can be found in all three locations: the work center bench, the shop, and the operating area. It implies that stock items are present in various areas within the work center, indicating that they are essential for the work processes and operations carried out in these locations.

The correct answer is maintenance group commander. Quality assurance is a function that ensures that products or services meet the required standards. In the military context, quality assurance is responsible for ensuring that maintenance activities are performed correctly and that equipment is maintained to the highest standards. The maintenance group commander oversees all maintenance activities within a unit or organization, making them the most appropriate authority for quality assurance. They have the knowledge and authority to enforce standards and ensure that maintenance operations are carried out effectively and efficiently.