2A753 Volume 4 Structural Maintenance Journeyman

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  • 1/65 Questions

    (602) What symbol do you enter on the Air Force Technical Order (AFTO) Form 781A when an aircraft is considered unsafe or unfit for flight?

    • Red X.
    • Red Plus
    • Red Dash
    • Red Diagonal
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Aircraft Maintenance Quizzes & Trivia
About This Quiz

When an aircraft suffers damage, it’s essential to fix it and get back in the air. A structural maintenance journey man is responsible for repairing physical damage, Aircraft Structural Maintenance specialists maintain the high quality structures of Air Force aircraft. Find out if you're qualified to be a structural maintenance journey man.

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  • 2. 

    (625) To clean dirt and grease from a surface to be sealed, you use

    • Soapy water

    • Alkaline cleaner

    • An approved solvent/cleaner

    • A high pressure water blaster.

    Correct Answer
    A. An approved solvent/cleaner
    Explanation
    To clean dirt and grease from a surface to be sealed, it is recommended to use an approved solvent/cleaner. This is because an approved solvent/cleaner is specifically formulated to effectively remove dirt and grease without damaging the surface. Soapy water may not be strong enough to remove stubborn dirt and grease, while an alkaline cleaner or a high pressure water blaster may be too harsh and cause damage. Therefore, using an approved solvent/cleaner is the most suitable option for this task.

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  • 3. 

    (622) What should you do to an aircraft panel before you fine finish the edges?

    • Alodine the panel.

    • Fit test the panel

    • Prime the panel

    • Paint the panel

    Correct Answer
    A. Fit test the panel
    Explanation
    Before fine finishing the edges of an aircraft panel, it is important to fit test the panel. This involves checking if the panel fits properly in its designated position and aligns correctly with other components. By conducting a fit test, any issues or adjustments needed can be identified and addressed before proceeding with the fine finishing process. This ensures that the panel will be properly positioned and aligned, resulting in a high-quality finished product.

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  • 4. 

    (601) Other assemblies are directly or indirectly attached to what main aircraft structural assembly?

    • Wings.

    • Nacelles.

    • Fuselage.

    • Empennage.

    Correct Answer
    A. Fuselage.
    Explanation
    The fuselage is the main aircraft structural assembly to which other assemblies, such as wings, nacelles, and empennage, are directly or indirectly attached. The fuselage is the central body of the aircraft, housing the cockpit, cabin, and cargo compartments, and providing structural support for the wings, tail, and engines. It is responsible for carrying the payload and passengers, and it plays a crucial role in maintaining the overall integrity and stability of the aircraft during flight.

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  • 5. 

    (602) When a new Air Force Technical Order (AFTO) Form 781A is initiated, what kind of discrepancies must not be transferred to the AFTO Form 781K?

    • Red X.

    • Red Dash

    • Red Diagonal

    • Discrepancies with a supply document number

    Correct Answer
    A. Red X.
    Explanation
    When a new Air Force Technical Order (AFTO) Form 781A is initiated, discrepancies with a Red X must not be transferred to the AFTO Form 781K. The Red X symbol indicates that the aircraft or equipment is unsafe or unserviceable and requires immediate attention. These discrepancies need to be addressed and resolved before transferring them to the AFTO Form 781K, which is used for historical documentation.

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  • 6. 

    (609) Before applying an aerodynamic smoothing compound to repair seams

    • Smooth the edges with sandpaper

    • Clean the area with distilled water

    • Smooth the edges with a rotary file.

    • Clean the area with an approved solvent

    Correct Answer
    A. Clean the area with an approved solvent
    Explanation
    Before applying an aerodynamic smoothing compound to repair seams, it is necessary to clean the area with an approved solvent. This is important because the solvent helps to remove any dirt, grease, or other contaminants that may be present on the surface. By cleaning the area thoroughly, the smoothing compound can adhere properly and provide a smooth and seamless repair.

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  • 7. 

    (612) What cardinal rule must be followed when removing damage from a composite structure?

    • Remove a minimum of sound material

    • Make the cutout to a round configuration

    • Use the scarf method to make an oval cutout

    • Use the step-joint method to make a square cutout

    Correct Answer
    A. Remove a minimum of sound material
    Explanation
    When removing damage from a composite structure, it is important to remove a minimum of sound material. This means that only the damaged or compromised areas should be removed, while preserving as much of the intact structure as possible. This helps to maintain the structural integrity of the composite and minimize the loss of strength or stability. Removing a minimum of sound material also reduces the amount of repair work needed and ensures that the repaired structure remains as close to its original design as possible.

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  • 8. 

    (616) How do you apply uniform pressure to laminated fiberglass repairs?

    • C-clamps.

    • Pressure tape

    • Pressure plates

    • Vacuum pressure

    Correct Answer
    A. Vacuum pressure
    Explanation
    To apply uniform pressure to laminated fiberglass repairs, vacuum pressure is used. This method involves creating a vacuum seal around the repair area using a vacuum bag or similar device. The vacuum removes air from the area, causing the bag to press tightly against the repair, applying even pressure. This ensures that the fiberglass layers are properly bonded and eliminates any air bubbles or inconsistencies. Vacuum pressure is an effective and efficient method for achieving a uniform pressure during laminated fiberglass repairs.

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  • 9. 

    (619) How do you determine if water has been removed or has migrated to another location when removing moisture from a honeycomb composite panel?

    • Use a tap hammer

    • Visually inspect area

    • Re-inspect area using a borescope

    • Re-inspect area using nondestructive inspection (NDI).

    Correct Answer
    A. Re-inspect area using nondestructive inspection (NDI).
    Explanation
    To determine if water has been removed or has migrated to another location when removing moisture from a honeycomb composite panel, it is necessary to re-inspect the area using nondestructive inspection (NDI). This method allows for a thorough examination of the panel without causing any damage. NDI techniques such as ultrasound or thermal imaging can be used to detect any remaining moisture or water migration within the panel. These techniques provide a reliable and accurate assessment of the moisture content in the honeycomb composite panel.

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  • 10. 

    (621) Before installing a plastic assembly into its retaining frame, clean the frame with

    • A mild soap and water solution

    • An approved solvent

    • A high detergent soap

    • Alcohol.

    Correct Answer
    A. An approved solvent
    Explanation
    The correct answer is "an approved solvent". This is because using an approved solvent is the most effective way to clean the frame before installing a plastic assembly. Solvents are specifically designed to dissolve and remove dirt, grease, and other contaminants from surfaces. They can effectively clean the frame without causing any damage or leaving residue behind. Mild soap and water solution, high detergent soap, and alcohol may not be as effective in removing all types of contaminants from the frame.

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  • 11. 

    (605) According to the basic principle of repair, when you make any repair your main concern is the original

    • Strength.

    • Contour.

    • Stresses.

    • Weight.

    Correct Answer
    A. Strength.
    Explanation
    When making a repair, the main concern is to restore the original strength of the object or structure. This means ensuring that the repaired area is as strong as it was before the damage occurred. By focusing on strength, the repair will be able to withstand the same forces and stresses as the original, maintaining the overall integrity and functionality of the object.

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  • 12. 

    (606) An angle drill is used to remove damage when

    • The damage is in a limited space

    • The skin and sub-structural damage cutout are the same

    • The skin and sub-structural damage cutout are not the same

    • Only the skin is damaged and the sub-structural member is intact

    Correct Answer
    A. The damage is in a limited space
    Explanation
    An angle drill is used to remove damage when the damage is in a limited space. This is because an angle drill is designed with a compact and angled shape that allows it to access tight and confined areas where a regular drill cannot reach. Therefore, it is the ideal tool to use when the damage is located in a limited space that requires a specialized drilling tool for repair or removal.

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  • 13. 

    (601) What provides shape, strength, and rigidity to the aircraft fuselage?

    • Spars.

    • Stringers.

    • Longerons.

    • Bulkheads.

    Correct Answer
    A. Bulkheads.
    Explanation
    Bulkheads provide shape, strength, and rigidity to the aircraft fuselage. They are vertical partitions that separate the fuselage into different compartments, such as the cockpit, passenger cabin, and cargo hold. Bulkheads are usually made of strong materials like aluminum or composite materials, and they help to distribute the structural loads evenly throughout the fuselage. They also provide support to the skin of the aircraft and help maintain the shape and integrity of the fuselage during flight.

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  • 14. 

    (607) If the location of the rivets on the inner and outer rows of a layout pattern on a square flush patch are the same then the

    • Wrong measurements were used to develop the rivet pattern

    • Rivet spacing and row spacing are identical

    • Doubler is twice the size of the filler plate

    • Edge distance is beyond acceptable limits

    Correct Answer
    A. Rivet spacing and row spacing are identical
    Explanation
    The given correct answer is "rivet spacing and row spacing are identical". This means that the distance between each rivet and the distance between each row of rivets in the layout pattern are the same. This is important for ensuring the structural integrity of the flush patch. If the rivet spacing and row spacing were different, it could lead to uneven distribution of forces and potentially weaken the patch. Therefore, it is crucial for the rivet spacing and row spacing to be identical in order to maintain the desired strength and stability of the patch.

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  • 15. 

    (608) When fabricating a doubler for a flush skin repair in an open area

    • Select material that is one-gage thicker than the skin

    • Position the doubler material inside the cutout

    • Develop a fastener layout on the patch plate

    • Split the doubler into two parts.

    Correct Answer
    A. Select material that is one-gage thicker than the skin
    Explanation
    When fabricating a doubler for a flush skin repair in an open area, it is important to select material that is one-gage thicker than the skin. This is because the doubler is used to reinforce the damaged area and provide additional strength. By using material that is one-gage thicker, it ensures that the doubler will be able to effectively support the skin and distribute any loads or stresses. This helps to prevent further damage and ensures a strong and durable repair.

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  • 16. 

    (625) What do you do if one-part sealant does not go on smoothly, easily, and evenly when applying it to an area?

    • Add thinner

    • Discard the sealant

    • Add more accelerators

    • Whip air into the sealant

    Correct Answer
    A. Discard the sealant
    Explanation
    If the one-part sealant does not go on smoothly, easily, and evenly when applying it to an area, the best course of action is to discard the sealant. This is because an uneven application can lead to improper sealing and potential issues in the future. It is better to start with a fresh sealant that can be applied properly rather than trying to salvage an ineffective one.

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  • 17. 

    (620) The sanded area of a scratch is washed down after each sandpaper grit is used to

    • Cool off the sanded area

    • Prevent the area from crazing

    • Keep the sanded area lubricated

    • Wash away the previously used sandpaper grit

    Correct Answer
    A. Wash away the previously used sandpaper grit
    Explanation
    The sanded area of a scratch is washed down after each sandpaper grit is used to wash away the previously used sandpaper grit. This is important because as the sandpaper grit becomes filled with debris and particles from the sanding process, it becomes less effective in smoothing the surface. By washing away the used grit, the next grit can have a clean surface to work on, ensuring a more efficient and effective sanding process.

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  • 18. 

    (621) When disassembling a transparent plastic assembly, what is the value of drawing a diagram on cardboard showing the location of the fasteners?

    • Loss of fasteners is reduced

    • Proper placement of fasteners is ensured

    • Missing or broken fasteners can be easily ordered.

    • Torquing requirements can be determined for each size and type of fastener

    Correct Answer
    A. Proper placement of fasteners is ensured
    Explanation
    Drawing a diagram on cardboard showing the location of the fasteners ensures that they are placed correctly when the transparent plastic assembly is disassembled. This helps in reassembling the assembly accurately without any mistakes or misplaced fasteners. It prevents any loss of fasteners and ensures that they are installed in the correct positions, maintaining the structural integrity of the assembly. This also saves time and effort that would otherwise be spent on searching for the correct placement of fasteners.

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  • 19. 

    (622) When using an original door as a template, you must make sure the original door has

    • A hinge.

    • The proper fit.

    • All paint removed

    • All attaching hardware

    Correct Answer
    A. The proper fit.
    Explanation
    When using an original door as a template, it is important to ensure that the original door has the proper fit. This means that the dimensions and proportions of the original door should be suitable for the intended purpose and location of the new door. By using a door with the proper fit as a template, it ensures that the new door will also have the correct dimensions and proportions, resulting in a well-fitting and functional door.

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  • 20. 

    (625) When preparing to mix a two-part sealant, you mix the sealant in accordance with the

    • Job guide

    • Technical order

    • Shop operating instructions

    • Manufacturer’s instructions

    Correct Answer
    A. Manufacturer’s instructions
    Explanation
    The correct answer is manufacturer's instructions. When preparing to mix a two-part sealant, it is important to follow the manufacturer's instructions. These instructions provide specific guidance on the correct ratios and mixing procedures to ensure the sealant is properly mixed and will perform as intended. The manufacturer's instructions take into account the specific properties of the sealant and are designed to ensure optimal performance and durability. Following these instructions is crucial to achieve the desired results and to maintain the quality and effectiveness of the sealant.

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  • 21. 

    (625) In order to use premixed frozen sealant, you should

    • Use a heat gun to thaw the sealant

    • Simply thaw the sealant and use it

    • Use a heat lamp to thaw the sealant

    • Allow the sealant to thaw overnight

    Correct Answer
    A. Simply thaw the sealant and use it
    Explanation
    To use premixed frozen sealant, the correct approach is to simply thaw the sealant and use it. There is no need to use a heat gun or heat lamp to thaw the sealant, and it is not necessary to allow the sealant to thaw overnight. Thawing the sealant and using it directly is the most efficient and effective method.

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  • 22. 

    (625) When cleaning a surface before applying a sealant, you can consider the cleaning operation completed

    • When the cleaner dries on the surface

    • When there is no discoloration on a clean drying cloth

    • Only after the surface being cleaned meets tack-free requirements

    • When no discoloration is picked up by one of your fingers touching the area

    Correct Answer
    A. When there is no discoloration on a clean drying cloth
    Explanation
    The correct answer is when there is no discoloration on a clean drying cloth. This means that the surface is free from any dirt, stains, or residue that could affect the adhesion of the sealant. A clean drying cloth should not pick up any discoloration or residue when wiped across the surface, indicating that it is thoroughly clean and ready for the sealant to be applied.

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  • 23. 

    (601) What reduces sway or yaw about the vertical axis of an aircraft?

    • Wings.

    • Fuselage.

    • Vertical stabilizer

    • Horizontal stabilizer

    Correct Answer
    A. Vertical stabilizer
    Explanation
    The vertical stabilizer is responsible for reducing sway or yaw about the vertical axis of an aircraft. It is a vertical fin located at the rear of the aircraft, usually attached to the tail section. The vertical stabilizer, along with the rudder, helps to stabilize the aircraft and maintain its directional stability. By providing a surface area perpendicular to the airflow, it counteracts any yawing motion caused by factors such as wind or uneven distribution of forces. This helps to keep the aircraft flying straight and level.

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  • 24. 

    (603) When inspecting for distortions, besides excellent lighting what else do you use?

    • A grid made up of horizontal and vertical lines

    • Viewing lines through panel at a distance of at least 40ft away

    • A dark background placed outside of the panel while viewing from inside

    • A dark grid made up of parallel curved lines of varying lengths and thicknesses

    Correct Answer
    A. A grid made up of horizontal and vertical lines
    Explanation
    To inspect for distortions, a grid made up of horizontal and vertical lines is used. This grid helps to identify any irregularities or deformities in the object being inspected. By comparing the lines of the grid to the lines of the object, any distortions or deviations from the expected shape can be easily detected. The grid provides a reference point for assessing the accuracy and integrity of the object's structure.

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  • 25. 

    (605) Before fastening the doubler and filler together for a flush repair, the repair parts must be

    • Filled in with aerodynamic smoothing compound

    • Curved to the precise contour of the repair area

    • Cut into a circular repair patch

    • Replaced as soon as practical

    Correct Answer
    A. Curved to the precise contour of the repair area
    Explanation
    Before fastening the doubler and filler together for a flush repair, the repair parts must be curved to the precise contour of the repair area. This is because the repair area needs to be properly aligned and shaped in order to ensure a flush and seamless repair. Curving the repair parts to the precise contour of the repair area helps to achieve this alignment and ensures that the repaired section blends in smoothly with the surrounding structure.

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  • 26. 

    (604) When is it acceptable to have bubbles on a plastic window?

    • Bubbles are never acceptable

    • They only impair vision along the edges of the panel.

    • They are well scattered and within acceptable number, diameter and spacing

    • They do not impair vision, are well scattered and within the limitations of the TO.

    Correct Answer
    A. They do not impair vision, are well scattered and within the limitations of the TO.
  • 27. 

    (615) When storing advanced composite materials in cold storage, what is the maximum temperature permitted?

    • 0ºF

    • 32ºF

    • 60ºF

    • 72ºF

    Correct Answer
    A. 0ºF
    Explanation
    Composite materials are made up of multiple components, such as fibers and resins, that are combined to create a strong and lightweight material. These materials are often sensitive to temperature changes and can degrade if exposed to high temperatures. Storing composite materials in cold storage helps to maintain their integrity and prevent any damage. The maximum temperature permitted for storing advanced composite materials in cold storage is 0ºF. This extremely low temperature ensures that the materials remain stable and do not experience any degradation or loss of properties.

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  • 28. 

    (601) Aircraft reference lines that indicate vertical planes parallel to the plane of symmetry are called

    • Waterlines.

    • Buttock lines

    • Wing stations

    • Fuselage stations

    Correct Answer
    A. Buttock lines
    Explanation
    Buttock lines are reference lines on an aircraft that indicate vertical planes parallel to the plane of symmetry. These lines are used to aid in the design and construction of the aircraft, particularly in shaping the fuselage and other components. By using buttock lines, engineers can ensure that the various sections of the aircraft are symmetrical and aligned correctly, resulting in better aerodynamics and overall performance.

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  • 29. 

    (608) When fabricating a filler plate for a flush skin repair in an open area, you determine the overall dimensions of the filler by

    • Using the cutout area as a template

    • Using the dimensions of a previously installed flush repair

    • Measuring the damaged area before making the skin cutout

    • Multiplying the length of the damage by the width of the damage, and adding the edge distance requirements

    Correct Answer
    A. Using the cutout area as a template
    Explanation
    When fabricating a filler plate for a flush skin repair in an open area, using the cutout area as a template is the correct method. This means that the dimensions of the filler plate should match the dimensions of the cutout area that was removed from the damaged skin. By using the cutout area as a template, the filler plate will fit perfectly into the open area, ensuring a flush repair. This method is commonly used to ensure accuracy and to avoid any discrepancies in the dimensions of the filler plate.

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  • 30. 

    (609) As it applies to the installation of repair parts, what is a primer and when is it applied?

    • Cleaning solvent; applied before painting

    • Precleaning agent; applied before using an approved solvent

    • Corrosion preventative; applied before the installation of repair parts.

    • Bonding agent; applied on repair parts to provide a base for a corrosion preventative

    Correct Answer
    A. Corrosion preventative; applied before the installation of repair parts.
    Explanation
    A primer is a type of corrosion preventative that is applied before the installation of repair parts. Its purpose is to provide a protective coating to prevent corrosion from occurring on the repaired area. By applying the primer before installing the repair parts, it helps to ensure that the repaired area is adequately protected against corrosion, extending the lifespan of the repair and preventing further damage.

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  • 31. 

    (617) When making a step-joint repair to an aramid honeycomb composite panel, you make the replacement plies

    • At right angles to each ply in the original panel

    • To match each ply in the original panel

    • At 30° to each ply in the original panel.

    • At 45° to each ply in the original panel

    Correct Answer
    A. To match each ply in the original panel
    Explanation
    When making a step-joint repair to an aramid honeycomb composite panel, the replacement plies should be made to match each ply in the original panel. This means that the orientation and alignment of the replacement plies should be the same as the plies in the original panel. By matching each ply, the repair will be seamless and the structural integrity of the composite panel will be maintained.

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  • 32. 

    (624) Your first step when repairing a defective fillet seal is to

    • Cut the faulty section from the fillet

    • Select the proper sealant cutting tools

    • Cut around the seal and at the base of the fastener

    • Grasp the seal with pliers and pull it away from the structure

    Correct Answer
    A. Select the proper sealant cutting tools
    Explanation
    The first step when repairing a defective fillet seal is to select the proper sealant cutting tools. This is because using the correct tools will ensure that the sealant is cut cleanly and accurately, allowing for a proper repair. Cutting the faulty section from the fillet, cutting around the seal and at the base of the fastener, or grasping the seal with pliers and pulling it away from the structure may be necessary steps in the repair process, but selecting the proper sealant cutting tools is the initial step that needs to be taken.

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  • 33. 

    (601) Which of these is an auxiliary flight control?

    • Flap.

    • Rudder.

    • Elevator.

    • Stabilizer.

    Correct Answer
    A. Flap.
    Explanation
    A flap is an auxiliary flight control that is located on the trailing edge of an aircraft's wing. It is used to increase lift and decrease the aircraft's speed during takeoff and landing. By extending the flaps, the surface area of the wing is increased, which creates more lift. This allows the aircraft to fly at slower speeds while maintaining lift, making it safer for takeoff and landing. The rudder, elevator, and stabilizer are all primary flight controls that are responsible for controlling the aircraft's direction, pitch, and stability, respectively.

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  • 34. 

    (622) When trimming aircraft panels or doors, you make a template out of plastic when

    • Time is critical

    • You need to see through the template

    • There isn’t a piece of metal to be found

    • The original panel is missing or badly damaged

    Correct Answer
    A. The original panel is missing or badly damaged
    Explanation
    When the original panel is missing or badly damaged, it becomes necessary to make a template out of plastic. This is because the template will serve as a guide for trimming the replacement panel or door to ensure that it fits properly. Without the original panel, the template becomes essential in replicating the shape and dimensions of the missing or damaged part.

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  • 35. 

    (603) When performing a visual inspection on nicked plastic assemblies, what are you looking for?

    • Nicked area is near the edge of the plastic and spreading inward

    • White powdered glass is often seen in a chipped area

    • Visibility through the nicked area is slight

    • Chipped area has a smooth appearance

    Correct Answer
    A. White powdered glass is often seen in a chipped area
    Explanation
    When performing a visual inspection on nicked plastic assemblies, you are looking for white powdered glass in a chipped area. This suggests that the plastic has been damaged and there may be a risk of further spreading or deterioration. The presence of white powdered glass indicates that the plastic has been chipped or cracked, potentially compromising its structural integrity. This visual cue helps identify areas that may require repair or replacement to ensure the overall quality and safety of the plastic assemblies.

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  • 36. 

    (606) When you’re preparing a cutout for an “open area,” you remove all damage and

    • Stop-drill all cracks.

    • Relieve stress concentrations.

    • Make sure the cutout is centered over a sub-structural member.

    • Anneal the cutout areas so the area is not work-hardened during the cutout operation.

    Correct Answer
    A. Relieve stress concentrations.
    Explanation
    When preparing a cutout for an "open area," the correct step is to relieve stress concentrations. This involves removing any damage and stop-drilling all cracks to prevent them from spreading further. By relieving stress concentrations, the structural integrity of the cutout area is improved, reducing the risk of further damage or failure. This step is crucial to ensure the safety and longevity of the structure.

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  • 37. 

    (614) To provide a more uniform bondline thickness when making a metal-bonded honeycomb repair, you use a

    • Film adhesive

    • Foam adhesive

    • Paste adhesive

    • Liquid adhesive

    Correct Answer
    A. Film adhesive
    Explanation
    A film adhesive is used to provide a more uniform bondline thickness when making a metal-bonded honeycomb repair. This is because film adhesives are typically thin and can be easily applied in a consistent manner, resulting in a uniform thickness across the bondline. Foam adhesives, paste adhesives, and liquid adhesives may be more difficult to apply evenly, leading to variations in bondline thickness. Therefore, a film adhesive is the most suitable option for achieving a uniform bondline thickness in this scenario.

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  • 38. 

    (619) How many thermocouples are used and how are they positioned on a wet laminate when removing moisture?

    • One; 2″ from the edge of the heat blanket

    • Two; 2″ from the edge of the heat blanket.

    • Three; equally spaced around the damaged area.

    • Four; equally spaced around the damaged area

    Correct Answer
    A. Two; 2″ from the edge of the heat blanket.
    Explanation
    The correct answer is Two; 2" from the edge of the heat blanket. This means that when removing moisture from a wet laminate, two thermocouples are used and they are positioned 2" away from the edge of the heat blanket. The positioning of the thermocouples ensures that the heat is evenly distributed and the moisture is effectively removed from the damaged area.

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  • 39. 

    (607) Before you develop a rivet layout for a circular flush repair, you must first establish the

    • Center point of the cutout area.

    • Head style of the rivets to be used

    • Rivet spacing required on the filler plate

    • Direction of the stress concentrations within the part being repaired

    Correct Answer
    A. Center point of the cutout area.
    Explanation
    Before developing a rivet layout for a circular flush repair, it is important to first establish the center point of the cutout area. This is because the center point will determine the positioning of the rivets and ensure that they are evenly distributed around the repair area. Without determining the center point accurately, the rivet layout may be incorrect, leading to potential issues with the repair and compromising the structural integrity of the part. Therefore, establishing the center point is a crucial step in developing an effective rivet layout for a circular flush repair.

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  • 40. 

    (610) When welding thermocouples follow the

    • Equipment manufacturer’s instructions

    • Technical Order (TO) 1–1–690

    • Thermocouple manual

    • Aircraft specific TO

    Correct Answer
    A. Equipment manufacturer’s instructions
    Explanation
    The correct answer is "equipment manufacturer’s instructions." This is because when welding thermocouples, it is important to follow the instructions provided by the equipment manufacturer. These instructions are specific to the welding equipment being used and ensure that the thermocouples are welded correctly and safely. Following the manufacturer's instructions also helps to maintain the integrity and functionality of the thermocouples.

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  • 41. 

    (602) What block on the Air Force Technical Order (AFTO) Form 781H do you check after entering a Red X discrepancy in the AFTO Form 781A?

    • STATUS TODAY

    • SYMBOL STATUS

    • CURRENT STATUS

    • STATUS CONDITION

    Correct Answer
    A. STATUS TODAY
    Explanation
    After entering a Red X discrepancy in the AFTO Form 781A, you would check the "STATUS TODAY" block on the Air Force Technical Order (AFTO) Form 781H. This block provides the current status of the aircraft or equipment, indicating whether it is operational or non-operational. By checking this block, you can determine the current status of the item in question and track any changes or updates.

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  • 42. 

    (606) When repairing damage to an aircraft, the first step in removing the damaged area is to determine

    • How much undamaged area should be removed

    • If the damage is near a sub-structural member.

    • If the damage is in an open area.

    • The final size of the patch.

    Correct Answer
    A. How much undamaged area should be removed
    Explanation
    When repairing damage to an aircraft, the first step in removing the damaged area is to determine how much undamaged area should be removed. This is important because it ensures that all the damaged parts are completely removed and replaced with new, undamaged material. Removing the appropriate amount of undamaged area also helps to maintain the structural integrity of the aircraft and prevent any further damage or issues in the future.

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  • 43. 

    (606) You must consider the location of any existing fasteners near a damaged area when determining the

    • Overall size of the cutout

    • Material thickness of the repair parts

    • Number of fasteners required for the repair

    • Classification of the repair to be accomplished

    Correct Answer
    A. Overall size of the cutout
    Explanation
    When determining the overall size of the cutout, it is important to consider the location of any existing fasteners near a damaged area. This is because the cutout should be sized in a way that avoids interfering with or compromising the integrity of these fasteners. By taking into account the location of existing fasteners, the overall size of the cutout can be determined in a manner that ensures proper repair and structural stability.

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  • 44. 

    (618) What step must be taken when doing a partial-through repair that is not done on a full core replacement repair?

    • Install a 0.010″ aluminum sheet shim

    • Cut the replacement core larger than the cutout

    • Cut one disk of adhesive film to the size of the cutout

    • Ensure the overlap of the patch plate is a minimum of 2″.

    Correct Answer
    A. Install a 0.010″ aluminum sheet shim
    Explanation
    When doing a partial-through repair that is not done on a full core replacement repair, it is necessary to install a 0.010" aluminum sheet shim. This shim helps to provide additional support and stability to the repair, ensuring that it is properly aligned and secure. The shim fills any gaps or uneven areas between the repaired section and the surrounding structure, helping to distribute the load evenly and prevent any potential issues or damage. By installing the aluminum sheet shim, the integrity and strength of the repair are enhanced, making it a crucial step in the partial-through repair process.

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  • 45. 

    (624) You can detect aircraft sealant defects within a pressurized area by

    • Performing a tack-free test while the area is pressurized

    • Checking the adhesion of the seal by removing small sections

    • Passing a listening device along the seams while the area is pressurized

    • Applying a water-soap mixture to all seams while the area is pressurized and watching for bubbles.

    Correct Answer
    A. Passing a listening device along the seams while the area is pressurized
    Explanation
    Passing a listening device along the seams while the area is pressurized allows for the detection of aircraft sealant defects. By using a listening device, any abnormal sounds or leaks can be identified, indicating the presence of defects in the sealant. This method is effective as it directly targets the area of concern and provides real-time feedback on the condition of the sealant.

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  • 46. 

    (604) When classifying damage to a composite structure, a puncture of a fiberglass panel that extends through one facing is which classification?

    • Repairable.

    • Class III

    • Class II.

    • Class I.

    Correct Answer
    A. Class II.
    Explanation
    A puncture of a fiberglass panel that extends through one facing is classified as Class II damage. Class II damage refers to damage that can be repaired without compromising the structural integrity of the composite structure. This means that the puncture can be fixed and the panel can still function properly without any significant loss of strength or performance.

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  • 47. 

    (611) When drilling aramid composite materials, how can you minimize fiber fuzz?

    • Use a dagger spade or brad point bit

    • Use a high speed, low-feed when drilling

    • Use a Carbide or diamond-coated drill bit

    • Use a split helix bit with either two or four helical flutes

    Correct Answer
    A. Use a dagger spade or brad point bit
    Explanation
    To minimize fiber fuzz when drilling aramid composite materials, it is recommended to use a dagger spade or brad point bit. These types of drill bits have a sharp point that helps to penetrate the material cleanly without causing excessive damage to the fibers. They also have a flat cutting edge that helps to create clean holes without fraying or fuzzing the fibers. Using these types of drill bits reduces the likelihood of fiber damage and ensures a neater and more precise drilling result.

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  • 48. 

    (613) When selecting a resin to repair laminated fiberglass assemblies, what must you know besides the method of curing?

    • Overall size of repair

    • Number of plies being replaced

    • Resin used by the manufacturer

    • Curvature of the area being repaired

    Correct Answer
    A. Resin used by the manufacturer
    Explanation
    When selecting a resin to repair laminated fiberglass assemblies, it is important to know the resin used by the manufacturer. This is because using a different resin may not provide the same level of adhesion and compatibility with the existing fiberglass. Using the same resin ensures that the repair will be strong and durable, and that the repaired area will blend in seamlessly with the rest of the assembly.

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  • 49. 

    (618) When drilling holes in a delaminated area of a metal-bonded honeycomb panel for injecting adhesive,

    • Pilot-drill all holes to avoid drilling into cells walls

    • Step-drill all holes to ensure proper adhesive injection

    • Drill holes first at the top and bottom of the delaminated area

    • Drill deep enough into the core material to permit the adhesive flow to remove any moisture present.

    Correct Answer
    A. Drill holes first at the top and bottom of the delaminated area
    Explanation
    When drilling holes in a delaminated area of a metal-bonded honeycomb panel for injecting adhesive, it is important to drill holes first at the top and bottom of the delaminated area. This ensures that the adhesive can flow effectively throughout the entire delaminated area, allowing for proper bonding and repair. By starting at the top and bottom, the adhesive can evenly distribute and fill any gaps or voids within the delaminated area, resulting in a stronger and more secure bond.

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Quiz Review Timeline (Updated): Mar 21, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 14, 2017
    Quiz Created by
    Jbesrod

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