Volume 1 Aircraft Maintenance General Subjects

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Aircraft Maintenance Quizzes & Trivia
About This Quiz

How much do you know about aircraft maintenance – a practice which concerns itself with the overhaul, repair, inspection and modification of an aircraft or a component of an aircraft? Find out today in this aircraft-themed quiz!


Quiz Preview

  • 2. 

    The responsibility for FOD prevention belongs to

    • Everyone

    • The logistics and operations group commanders

    • The immediate supervisor

    • The wing commander

    Correct Answer
    A. Everyone
    Explanation
    The responsibility for FOD (Foreign Object Debris) prevention belongs to everyone. This means that it is the duty of all individuals within an organization or facility to be aware of and take actions to prevent FOD. FOD can cause damage to equipment, pose safety risks, and lead to costly repairs. By emphasizing that everyone is responsible for FOD prevention, it promotes a culture of awareness and accountability throughout the organization. This ensures that all individuals are actively involved in identifying and mitigating potential FOD hazards.

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  • 3. 

    When is it permissible to reuse cotter pins?

    • Never

    • In emergencies

    • When the mission dictates it

    • When they are construced of pliable material

    Correct Answer
    A. Never
    Explanation
    It is never permissible to reuse cotter pins. This is because cotter pins are designed to be used only once and are not meant to be reused. Reusing cotter pins can compromise their integrity and effectiveness, potentially leading to failures or accidents. It is important to always use new cotter pins when securing fasteners to ensure proper functionality and safety.

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  • 4. 

    The responsibility for initiating a lost tool report belongs to the

    • Person issued the tool

    • CTK support section

    • Expediter or production supervisor

    • Flight chief or flight commander

    Correct Answer
    A. Person issued the tool
    Explanation
    The responsibility for initiating a lost tool report belongs to the person who was issued the tool. This is because they are the one who had possession of the tool and would be aware if it was lost or misplaced. They would need to report the loss so that appropriate actions can be taken to locate or replace the tool.

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  • 5. 

    Radiation hazards are affected by

    • Strength of emission, time of exposure, and weather

    • Input power, weather, and number of personnel in the area

    • Time of exposure, amount of training, and number of operating units

    • Strength of emission, time of day, and input power

    Correct Answer
    A. Strength of emission, time of exposure, and weather
    Explanation
    Radiation hazards are affected by the strength of emission, time of exposure, and weather. The strength of emission refers to the intensity or power of the radiation being emitted. A higher strength of emission can result in greater exposure and potential harm. The time of exposure refers to the duration of time that individuals are exposed to the radiation. Longer exposure times can increase the risk of health effects. Weather conditions can also play a role in radiation hazards as certain weather patterns can affect the dispersion and concentration of radiation in the environment.

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  • 6. 

    Normally, the safe distance behind an operating jet engine exhaust is

    • 175 feet

    • 125 feet

    • 200 feet

    • 150 feet

    Correct Answer
    A. 200 feet
    Explanation
    The safe distance behind an operating jet engine exhaust is 200 feet because jet engines produce extremely hot and powerful exhaust gases. These gases can reach extremely high temperatures and velocities, posing a significant risk to anyone standing too close. To ensure safety, it is recommended to maintain a distance of 200 feet to avoid potential burns or injuries from the jet engine exhaust.

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  • 7. 

    Responsibility for maintaining the Air Force Technical Order 781- series forms binder with the

    • Crew chief

    • Branch chief

    • Section chief

    • Flight chief

    Correct Answer
    A. Crew chief
    Explanation
    The responsibility for maintaining the Air Force Technical Order 781-series forms binder lies with the crew chief. The crew chief is typically responsible for the overall maintenance and upkeep of the aircraft, including the documentation and paperwork associated with it. They are directly involved in the day-to-day operations and maintenance of the aircraft, making them the most suitable person to handle the technical order forms binder.

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  • 8. 

    The symbol entered on the forms if an aircraft exceeds the PDM cyle by 90 days and an extension is not granted is a

    • Black signature

    • Red diagonal

    • Red dash

    • Red X

    Correct Answer
    A. Red X
    Explanation
    The symbol entered on the forms if an aircraft exceeds the PDM cycle by 90 days and an extension is not granted is a red X. This symbol is used to indicate that the aircraft has not undergone the required maintenance within the specified time frame and that an extension has not been granted. The red X serves as a visual reminder to the maintenance personnel that the aircraft is not airworthy and should not be flown until the necessary maintenance has been completed.

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  • 9. 

    The most common excuse for taking short cuts is

    • People shortage

    • Parts availability

    • Money shortage

    • Time restraints

    Correct Answer
    A. Time restraints
    Explanation
    The most common excuse for taking shortcuts is time restraints. When people are under pressure to complete a task within a limited timeframe, they may feel compelled to take shortcuts in order to save time. This could involve skipping certain steps, neglecting quality control, or rushing through the process. Time restraints can create a sense of urgency and make it difficult for individuals to prioritize thoroughness and attention to detail.

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  • 10. 

    The prime contributors to dropped objects are

    • Chaff/flare discharges

    • Hung weapons

    • Jettisoned fuel tanks

    • Latches and fasteners

    Correct Answer
    A. Latches and fasteners
    Explanation
    Latches and fasteners are the correct answer because they are the main causes of dropped objects. When latches and fasteners are not properly secured or maintained, they can become loose or fail, causing objects to fall or detach. This is especially common in industries such as construction, manufacturing, and aviation, where equipment and tools are frequently used and moved. Proper inspection and maintenance of latches and fasteners are crucial to prevent accidents and ensure workplace safety.

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  • 11. 

    The condition most likely to cause aircraft damage is

    • Predicted heavy storms

    • Hurricanes

    • Sudden local storms

    • Tornadoes

    Correct Answer
    A. Sudden local storms
    Explanation
    Sudden local storms are the most likely condition to cause aircraft damage. These storms can quickly develop and bring strong winds, heavy rain, and turbulence, which can pose a significant risk to aircraft. Unlike predicted heavy storms, hurricanes, or tornadoes, sudden local storms are more unpredictable and can catch pilots off guard, making them more dangerous in terms of potential aircraft damage.

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  • 12. 

    The first step taken when reviewing an Air Force Technical Order (AFTO) 244 is to

    • Match the ID number on the form with the ID number on the unit

    • Check the operational status of the unit

    • Check the inspection status of the unit

    • Ensure all TCTOs have been done

    Correct Answer
    A. Match the ID number on the form with the ID number on the unit
    Explanation
    The first step taken when reviewing an Air Force Technical Order (AFTO) 244 is to match the ID number on the form with the ID number on the unit. This ensures that the correct form is being reviewed for the specific unit, as each unit will have its own unique ID number. By matching the ID numbers, any discrepancies or errors can be identified and corrected before proceeding with the review process.

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  • 13. 

    The estimated percent of accidents caused by nature is

    • 4

    • 8

    • 6

    • 2

    Correct Answer
    A. 2
    Explanation
    The estimated percent of accidents caused by nature is 2. This means that only 2% of accidents are caused by natural factors such as weather conditions, natural disasters, or animal encounters. The majority of accidents are likely caused by human error, mechanical failures, or other non-natural factors.

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  • 14. 

    The safety training phase described as an effective tool that creates a lasting impression for new airmen is

    • General

    • Initial

    • Supervisor's

    • Sustained job safety

    Correct Answer
    A. Initial
    Explanation
    The correct answer is "Initial." The safety training phase that is described as an effective tool that creates a lasting impression for new airmen is the initial phase. This phase is crucial as it sets the foundation for airmen to understand and prioritize safety in their job roles. It helps them develop a strong safety mindset from the beginning, which is essential for their overall safety and the safety of others in the workplace.

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  • 15. 

    Hazardous Waste Management System rules are published by

    • DOD

    • MAJCOM

    • US Air Force

    • The EPA

    Correct Answer
    A. The EPA
    Explanation
    The correct answer is the EPA. The EPA, or the Environmental Protection Agency, is responsible for publishing the Hazardous Waste Management System rules. These rules help regulate the proper handling, storage, and disposal of hazardous waste to protect human health and the environment. The EPA sets guidelines and standards for hazardous waste management to ensure compliance and prevent pollution.

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  • 16. 

    The type of technical order library that does not need to maintain its currency is

    • Training

    • Reference

    • Operational

    • Aircraft

    Correct Answer
    A. Reference
    Explanation
    A reference technical order library does not need to maintain its currency because it is a collection of documents that provide information and guidance on specific topics. Unlike training, operational, or aircraft technical order libraries, the reference library is not used for day-to-day operations or maintenance. Instead, it serves as a resource for individuals to consult when they need information or clarification on a particular subject. Therefore, the reference library does not require regular updates or revisions to stay current.

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  • 17. 

    Alluminum alloy washers are used with steel bolts on aluminum alloy parts in low-torque applications to

    • Prevent vibration

    • Prevent corrosion

    • Reduce shimming

    • Prevent vibration

    Correct Answer
    A. Prevent corrosion
    Explanation
    Aluminum alloy washers are used with steel bolts on aluminum alloy parts in low-torque applications to prevent corrosion. Aluminum and steel are two different metals that can cause a galvanic reaction when in contact with each other, leading to corrosion. By using aluminum alloy washers, it helps to create a barrier between the aluminum parts and the steel bolts, reducing the likelihood of corrosion occurring. This is important in low-torque applications where the risk of corrosion may be higher due to prolonged exposure to moisture or other corrosive elements.

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  • 18. 

     The correct way to detect broken wires on a cable is to

    • Pass a cloth along the length of cable

    • Carefully run your hand along the length of cable

    • Pass a thin piece of paper along the length of the cable

    • Use a strong light along the length of cable

    Correct Answer
    A. Pass a cloth along the length of cable
    Explanation
    Passing a cloth along the length of the cable can help detect broken wires because if there are any broken wires, the cloth may get caught or snag on them. This method allows for a tactile examination of the cable, which can provide physical feedback if there are any abnormalities or breaks in the wires.

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  • 19. 

    The responsibility for ensuring good supply discipline is practiced resides with

    • Squadron commanders

    • Base commanders

    • Squadron quality assurance (QA) section

    • Supervisors at all levels

    Correct Answer
    A. Supervisors at all levels
    Explanation
    Supervisors at all levels are responsible for ensuring good supply discipline is practiced. This means that it is the duty of every supervisor, regardless of their position or rank, to ensure that proper procedures and protocols are followed in managing and maintaining the supply chain. This includes monitoring inventory, enforcing accountability, and promoting efficiency in the supply system. By placing this responsibility on supervisors at all levels, it ensures that everyone in the organization is actively involved in maintaining good supply discipline.

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  • 20. 

    The symptom that is not a sign of noise fatigue is

    • Dizziness

    • A feeling of emptiness

    • Impairment of mental concentration

    • Emotional irratibilty

    Correct Answer
    A. A feeling of emptiness
    Explanation
    The symptom of "a feeling of emptiness" is not typically associated with noise fatigue. Noise fatigue is characterized by symptoms such as dizziness, impairment of mental concentration, and emotional irritability. However, a feeling of emptiness is more commonly associated with other conditions such as depression or a sense of purposelessness, rather than being directly linked to noise fatigue.

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  • 21. 

    The MB-4 tractor incorporates

    • Four-wheel steering, four-wheel drive

    • Two-wheel steering, two-wheel drive

    • Two-wheel steering, four-wheel drive

    • Four-wheel steering, two-wheel drive

    Correct Answer
    A. Four-wheel steering, four-wheel drive
    Explanation
    The correct answer is four-wheel steering, four-wheel drive. This means that the MB-4 tractor has the capability to steer all four wheels and drive all four wheels simultaneously. This configuration allows for better maneuverability and traction, making it suitable for off-road or challenging terrains.

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  • 22. 

    Special bolts are identified by

    • The bolt head marked with a triangle

    • A zinc-plated nickel steel covering

    • A galvanized-plated steel covering

    • The bolt head marked with the letter S

    Correct Answer
    A. The bolt head marked with the letter S
    Explanation
    Special bolts are identified by the bolt head marked with the letter S. This means that the bolt head will have the letter S engraved or stamped on it, indicating that it is a special bolt. The other options mentioned, such as a triangle mark, zinc-plated nickel steel covering, or galvanized-plated steel covering, do not indicate the special nature of the bolt.

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  • 23. 

    Aircraft cable size is determined by its

    • Length

    • Diameter

    • Radius

    • Circumference

    Correct Answer
    A. Diameter
    Explanation
    The size of an aircraft cable is determined by its diameter. The diameter refers to the thickness of the cable, which is an important factor in determining its strength and load-bearing capacity. A thicker cable will generally be able to withstand higher loads and provide more stability and support. Therefore, the diameter of the cable is a crucial specification to consider when selecting the appropriate size for an aircraft cable.

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  • 24. 

    When measuring resistance on a Fluke multimeter, the letters OL indicate

    • Overload

    • Infinity

    • Error

    • Ohms low

    Correct Answer
    A. Overload
    Explanation
    When measuring resistance on a Fluke multimeter, the letters OL indicate "Overload". This means that the resistance being measured is higher than the maximum limit of the multimeter. It indicates that the circuit or component being tested has a resistance value that exceeds the range of the multimeter.

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  • 25. 

    The frequency of cleaning an aircraft exterior depends, for the most part, on

    • The mission of the aircraft

    • Structural design

    • Environmental conditions

    • Corrosion treatments available

    Correct Answer
    A. Environmental conditions
    Explanation
    The frequency of cleaning an aircraft exterior depends on environmental conditions. Different environments can subject the aircraft to varying levels of dirt, dust, pollution, and other contaminants. These factors can accumulate on the aircraft's exterior, affecting its performance and appearance. Therefore, the more severe the environmental conditions are, the more frequently the aircraft will need to be cleaned to maintain its operational efficiency and aesthetic appeal.

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  • 26. 

    The type of maintenance that ensures equipment is ready and available at the time of need is

    • Corrective

    • Unscheduled

    • Preventive

    • Protective

    Correct Answer
    A. Preventive
    Explanation
    Preventive maintenance refers to the proactive measures taken to prevent equipment failure and ensure its readiness and availability when needed. It involves regular inspections, cleaning, lubrication, and replacement of worn-out parts to keep the equipment in optimal working condition. By identifying and addressing potential issues beforehand, preventive maintenance reduces the risk of unexpected breakdowns and minimizes downtime. This type of maintenance is crucial for maximizing equipment lifespan, optimizing performance, and avoiding costly repairs or replacements.

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  • 27. 

    In most units, the responsibility for investigatin dropped objects rests with

    • The operations commander

    • The flight safety officer

    • Quality assurance

    • The FOD prevention office

    Correct Answer
    A. Quality assurance
    Explanation
    Quality assurance is responsible for investigating dropped objects in most units. Quality assurance is a department or function within an organization that is responsible for ensuring that products or services meet specified requirements and standards. This includes investigating incidents or issues such as dropped objects to identify the root cause, implement corrective actions, and prevent future occurrences. Quality assurance personnel are trained in identifying potential hazards, conducting investigations, and implementing safety measures to prevent accidents and maintain a safe working environment.

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  • 28. 

    The lowest person authorized to clear a red X when a lost tool cannot be located is the

    • Crew Chief

    • Wing commander

    • Maintenance superintendent

    • Aircraft engineer

    Correct Answer
    A. Maintenance superintendent
    Explanation
    The maintenance superintendent is the lowest person authorized to clear a red X when a lost tool cannot be located. This individual is responsible for overseeing and managing maintenance operations, ensuring that all necessary tools and equipment are accounted for. They have the authority to clear a red X, indicating that the aircraft is safe for flight even if a tool is missing. The crew chief may have limited authority and the wing commander and aircraft engineer are typically higher-ranking positions with different responsibilities.

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  • 29. 

    The noise intensity of a jet engine is greatest toward the rear at a

    • 65 degree angle at either side

    • 15 degree angle at either side

    • 95 degree angle at either side

    • 45 degree angle at either side

    Correct Answer
    A. 45 degree angle at either side
    Explanation
    The correct answer is 45 degree angle at either side. The noise intensity of a jet engine is greatest toward the rear at a 45 degree angle at either side. This is because the noise generated by a jet engine is primarily caused by the exhaust gases and the turbulence created by the high-speed exhaust flow. As the exhaust gases move away from the engine, they spread out and disperse, resulting in a decrease in noise intensity. Therefore, the noise is most intense at a 45 degree angle at either side, where the exhaust gases are still concentrated but have started to disperse.

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  • 30. 

    Under ideal conditions, an aircraft is said to be operationally ready when

    • The required inspection and servicing are complete

    • It is released by production scheduling

    • All minor discrepancies are completely resolved

    • The aircraft forms are checked

    Correct Answer
    A. The required inspection and servicing are complete
    Explanation
    The correct answer is that the required inspection and servicing are complete. This means that all necessary checks and maintenance tasks have been carried out on the aircraft, ensuring that it is in proper working condition and ready for operation. The other options mentioned, such as being released by production scheduling, resolving minor discrepancies, and checking aircraft forms, may also be important steps in the operational readiness process, but they are not the primary factor that determines if an aircraft is operationally ready.

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  • 31. 

    A major drawback of using pneumatic lifting bags is

    • Time consumption

    • Training requirements

    • Manning requirements

    • Instability

    Correct Answer
    A. Instability
    Explanation
    The major drawback of using pneumatic lifting bags is instability. This means that the bags may not provide a stable lifting platform, which can be problematic when trying to lift heavy objects. Instability can lead to accidents or damage to the objects being lifted.

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  • 32. 

    The FL-1D floodlight consists of two

    • 100 watt lamp fixtures

    • 1,000 watt lamp fixtures

    • 110,000 watt lamp fixtures

    • 10,000 watt lamp fixtures

    Correct Answer
    A. 1,000 watt lamp fixtures
    Explanation
    The correct answer is 1,000 watt lamp fixtures. The FL-1D floodlight consists of two lamp fixtures, each with a power rating of 1,000 watts.

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  • 33. 

    To tighten cannon plugs, do not use

    • Strap wrench

    • Fingers

    • Channel lock pliers

    • Padded conduit pliers

    Correct Answer
    A. Channel lock pliers
    Explanation
    Channel lock pliers should not be used to tighten cannon plugs because they can easily damage the plugs due to their strong grip. Cannon plugs are delicate and require a gentle touch to avoid any harm. Therefore, using channel lock pliers can potentially cause harm to the plugs and should be avoided.

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  • 34. 

    The inspection usually performed just prior to takeoff and that may include operational checks of some systems is the

    • End of runway

    • Preflight

    • Thruflight

    • In progress

    Correct Answer
    A. End of runway
    Explanation
    The correct answer is "end of runway" because it is the location where the inspection is typically conducted just before takeoff. This inspection ensures that all systems are functioning properly and ready for the flight. It is crucial to perform these operational checks to ensure the safety and efficiency of the aircraft before it takes off.

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  • 35. 

    In order of increasing capability, the Air Force's varying degrees of maintenance capabilities are

    • Organizational, intermediate, or depot

    • Departmental, organizational, or depot

    • Organizational, field, or intermediate

    • Departmental, intermediate, or field

    Correct Answer
    A. Organizational, intermediate, or depot
    Explanation
    The correct answer is organizational, intermediate, or depot. This is because the Air Force's maintenance capabilities are categorized into three levels: organizational, intermediate, and depot. The organizational level refers to maintenance performed by the unit itself, such as basic repairs and inspections. The intermediate level involves more complex repairs and overhauls that are typically performed at specialized maintenance facilities. The depot level is the highest level of maintenance capability, involving extensive repairs, modifications, and overhauls performed at dedicated depot facilities.

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  • 36. 

    The solution used to treat areas affected with electrolyte from a lead-acid battery is

    • Boric acid

    • Sodium bicarbonate

    • Aluminum hydroxide

    • Potassium hydroxide

    Correct Answer
    A. Sodium bicarbonate
    Explanation
    Sodium bicarbonate is the correct solution used to treat areas affected with electrolyte from a lead-acid battery. Sodium bicarbonate, also known as baking soda, is a mild alkaline substance that can neutralize the acidic electrolyte. It helps to prevent further damage and corrosion caused by the electrolyte.

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  • 37. 

    Prior to using a torque wrench, cycle the torque wrench through the breakaway torque at the

    • Maximum setting at least six times

    • Maximum setting at least four times

    • Lowest setting at least six times

    • Lowest setting at least four times

    Correct Answer
    A. Maximum setting at least six times
    Explanation
    To ensure accuracy and reliability, it is recommended to cycle the torque wrench through the breakaway torque at the maximum setting at least six times before using it. This process helps to condition the internal components of the wrench and ensure that it is properly calibrated and ready for use. By doing this, any inconsistencies or variations in the wrench's performance can be identified and corrected, guaranteeing accurate torque measurements during its operation.

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  • 38. 

    The method that cannot be used to search for lost tools is

    • X-ray

    • Magnetic particle

    • Visual search

    • Depaneling

    Correct Answer
    A. Magnetic particle
    Explanation
    Magnetic particle inspection is a non-destructive testing method used to detect surface and near-surface defects in materials. It involves applying a magnetic field to the object and then applying iron particles to the surface. If there are any defects present, the particles will be attracted to them and create a visible indication. However, this method is not suitable for searching for lost tools as it requires direct contact with the surface being inspected, which would not be possible if the tool is lost or hidden.

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  • 39. 

    The unit capable of providing AC and DC electrical power, in addition to pneumatic power, for ground maintenance is the

    • AF/M-32R-3

    • A/M32A-95

    • A/M32A-86

    • A/M32A-60

    Correct Answer
    A. A/M32A-60
    Explanation
    The A/M32A-60 is the unit capable of providing AC and DC electrical power, as well as pneumatic power, for ground maintenance. This unit is specifically designed for this purpose and is widely used in various maintenance operations. It is a versatile and reliable unit that can meet the power requirements of different equipment and systems during ground maintenance tasks.

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  • 40. 

    When securing widely spaced bolts by the double-twist safetying method, the maximum number of bolts that may be wired in a series is

    • Five

    • Six

    • Three

    • Four

    Correct Answer
    A. Three
    Explanation
    When securing bolts using the double-twist safetying method, the maximum number of bolts that can be wired in a series is three. This method involves passing a wire through the heads of the bolts and twisting it twice to secure them. By limiting the number of bolts to three, it ensures that the wire can be properly twisted and tightened, providing a secure and reliable fastening.

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  • 41. 

    Aircraft oxygen servicing or draining is prohibited within how many feet of hangars or structures?

    • 50

    • 25

    • 75

    • 100

    Correct Answer
    A. 50
    Explanation
    Aircraft oxygen servicing or draining is prohibited within 50 feet of hangars or structures. This restriction is in place to ensure safety and prevent potential hazards such as fire or explosion. Oxygen is highly flammable and can react violently with certain materials, so it is important to maintain a safe distance from any structures that could potentially ignite or be damaged by such a reaction. By enforcing this prohibition, the risk of accidents and damage is minimized.

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  • 42. 

    During desert operations, lubrication should be done

    • Only when necessary, and then sparingly

    • After every aircraft recovery or prior to every flight

    • As often as possible and as abundantly as possible

    • At least weekly and as liberally as possible

    Correct Answer
    A. Only when necessary, and then sparingly
    Explanation
    During desert operations, lubrication should be done only when necessary and then sparingly. This is because the desert environment is extremely dry and dusty, which can cause excessive wear and tear on aircraft components. Lubrication is necessary to reduce friction and prevent damage, but excessive lubrication can attract and trap dust particles, leading to further damage. Therefore, lubrication should be done only when necessary to ensure proper functioning of the aircraft, and it should be done sparingly to avoid excessive buildup of dust and debris.

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  • 43. 

    The method of aircraft hoisting confined to emergencies when no other method is available is

    • Lifting bags

    • Crane hoisting

    • Cribbing

    • Aircraft jacking

    Correct Answer
    A. Crane hoisting
    Explanation
    Crane hoisting is a method of aircraft hoisting that is only used in emergencies when no other method is available. This implies that crane hoisting is not the preferred or commonly used method for lifting aircraft, but rather a last resort option. In emergency situations where other methods like lifting bags, cribbing, or aircraft jacking are not feasible or accessible, a crane can be used to lift the aircraft.

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  • 44. 

    The directional flow of the schematics in the troubleshooting manual is from the

    • Resulting action to the system initiating the action

    • Top of the diagram to the bottom of the diagram

    • Left side of the diagram to the right side of the diagram

    • Right side of the diagram to the left side of the diagram

    Correct Answer
    A. Left side of the diagram to the right side of the diagram
    Explanation
    The correct answer is "Left side of the diagram to the right side of the diagram." In schematics, the flow of information or actions is typically represented from left to right. This means that the system initiating the action is usually located on the left side of the diagram, and the resulting action or outcome is shown on the right side. This directional flow helps users to follow the logical sequence of events and understand how different components or systems interact with each other.

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  • 45. 

    The maintenance stand that is a scissor-type is the

    • B-2

    • C-1

    • B-1

    • B-4

    Correct Answer
    A. B-4
    Explanation
    The correct answer is B-4 because a scissor-type maintenance stand is typically used for working on aircraft. The scissor-type stand is designed to provide stability and height adjustment, making it easier for mechanics to access different areas of the aircraft during maintenance and repair tasks.

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  • 46. 

    The number of threads that must be showing through a self-locking nut for maximum locking effect is at least

    • Three

    • Four

    • One

    • Two

    Correct Answer
    A. Two
    Explanation
    For maximum locking effect, at least two threads must be showing through a self-locking nut. This is because the self-locking nut relies on friction between the nut and the bolt threads to prevent loosening. With only one thread showing, there may not be enough contact area to generate sufficient friction and prevent loosening. However, with two threads showing, there is a larger contact area, increasing the friction and enhancing the locking effect. Therefore, the minimum requirement for maximum locking effect is two threads showing through the self-locking nut.

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  • 47. 

    Corrosion or deterioration of a metal part continues until the part is

    • Chemically treated

    • Heat treated

    • Painted

    • Exhausted or salvaged

    Correct Answer
    A. Exhausted or salvaged
    Explanation
    Corrosion or deterioration of a metal part continues until the part is exhausted or salvaged. This means that the corrosion process will keep occurring until the metal part is completely worn out or until it is salvaged, which involves repairing or restoring the part to its original condition. Chemical treatment, heat treatment, and painting may help slow down the corrosion process, but they do not completely stop it. Therefore, the most effective solution to prevent further corrosion is to either use the part until it is no longer usable or salvage it.

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  • 48. 

    Galvanic corrosion occurs when

    • There is a chemical difference between the boundary materials and core material of the metal grains

    • Different metals are in contact with each other and an electrolyte

    • Water and oxygen sets between two or more areas of a similar metal in contact with each other

    • A combination of corrosion and tensile stress are present

    Correct Answer
    A. Different metals are in contact with each other and an electrolyte
    Explanation
    When different metals are in contact with each other and an electrolyte, galvanic corrosion can occur. This is because the metals have different electrochemical potentials, causing one metal to act as an anode and the other as a cathode. The electrolyte provides a medium for the flow of ions, completing the galvanic cell. This leads to the transfer of electrons from the anode to the cathode, resulting in the corrosion of the anode.

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  • 49. 

    The nondirective publication that may cite forms and provide guidance on completing them but can't enfoce what's on the form is

    • Directory

    • Instruction

    • Pamplet

    • Supplement

    Correct Answer
    A. Pamplet
    Explanation
    A pamphlet is a non-directive publication that can provide guidance on completing forms, but it does not have the authority to enforce what is written on the form. It is a informative resource that can cite forms and offer instructions, but it does not have the power to enforce compliance or dictate what should be included on the form.

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  • Mar 21, 2023
    Quiz Edited by
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  • Jan 28, 2010
    Quiz Created by
    Mike872208
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