M7.2 Flashcards
How should grinding machines be maintained?
a) Cleaned and kept free from abrasive dust, with regular lubrication of bearings
b) Only cleaned after every 10 uses
c) Lubricated only when grinding wheels become noisy and starts to vibrate
a) Cleaned and kept free from abrasive dust, with regular lubrication of bearings
What should be prevented from coming into contact with the grinding wheels on a grinder?
a) Oil or grease
b) Abrasive dust
c) Water
a) Oil or grease
Where should drill bits be stored when not in use?
a) In a toolbox
b) In a drill bit stand
c) In a drawer
b) In a drill bit stand
How should reamers be stored?
a) Laid loosely in a drawer
b) In a plastic bag
c) In partitioned boxes or grooved trays
c) In partitioned boxes or grooved trays
What should be done if a tool is found missing during a shift?
a) Wait until the end of the shift to report it
b) Immediately inform the supervisor and conduct a thorough search
c) Ignore it if it’s a small tool
b) Immediately inform the supervisor and conduct a thorough search
What system is often used to help keep track of tools in a toolbox?
a) Barcode scanner
b) Shadow board or shadow foam
c) Magnetic tool holder
b) Shadow board or shadow foam
How are tools typically controlled and recorded in a Part-145 organization?
a) Using dedicated tool tags, barcode/QR codes, or a computerized system
b) Through handwritten logs only
c) Tools are not recorded, only physically checked
a) Using dedicated tool tags, barcode/QR codes, or a computerized system
What must be done at the end of a shift or maintenance task regarding tools?
a) Tools can be left in the workshop
b) Only company tools need to be checked
c) All tools must be accounted for, and the aircraft cannot be released for service until this is done
c) All tools must be accounted for, and the aircraft cannot be released for service until this is done
What must be recorded in the tool register for each tool?
a) Only the tool’s identification number
b) Tool identification number, service history, and calibration details
c) Only the brand name and model number
b) Tool identification number, service history, and calibration details
How is the tool register maintained at the issue counter?
a) A new section is used for each shift, and issued/received tools are tallied
b) With a single section for all shifts
c) Tools are logged only when missing
a) A new section is used for each shift, and issued/received tools are tallied
What should happen if there is an outstanding entry in the tool register?
a) It should be ignored until the next shift
b) An investigation must be carried out to locate the missing tool
c) The tool should be marked as missing and left unresolved
b) An investigation must be carried out to locate the missing tool
What should happen if there is an outstanding entry in the tool register?
a) It should be ignored until the next shift
b) An investigation must be carried out to locate the missing tool
c) The tool should be marked as missing and left unresolved
b) An investigation must be carried out to locate the missing tool
What is a key reason for tool control and record-keeping in aviation maintenance?
a) To track the cost of each tool
b) To reduce the number of tools required
c) To prevent tools from being lost and causing Foreign Object Damage (FOD)
c) To prevent tools from being lost and causing Foreign Object Damage (FOD)
What is essential to have for every material used in the workshop?
a) Product label only
b) traceability
c) Price list
b) traceability
Which of the following materials must be stored in a refrigerator to maintain their usability?
a) Paints
b) Aircraft sealants
c) Greases
b) Aircraft sealants
What must be done with mixed two-part resin sealants before disposal?
a) Allow the resin to cure completely before disposal
b) Dispose of immediately after use
c) Store them for later use without curing
a) Allow the resin to cure completely before disposal
What does a dimension refer to in aircraft engineering?
a) The color or material of a part
b) A measurable limit such as length, width, or height
c) The weight of a component
b) A measurable limit such as length, width, or height
What is a limit dimension in machining?
a) The dimension that describes the exact shape of a part
b) The theoretical size of a part
c) The maximum or minimum allowable dimension of a machined part
c) The maximum or minimum allowable dimension of a machined part
Which of the following tools is commonly used for measuring the height of an object in precision machining?
a) Vernier caliper
b) Measuring tape
c) Height gauge
c) Height gauge
What is the nominal size of a part?
a) An approximate dimension used for general identification
b) The actual measured size of the part
c) The smallest possible dimension a part can have
a) An approximate dimension used for general identification
What does the basic size refer to in relation to dimensions?
a) The actual size measured on a part
b) The theoretical size from which size limits are derived
c) The smallest dimension allowed for the part
b) The theoretical size from which size limits are derived
What does the actual size of a part refer to?
a) The theoretical size from which size limits are derived
b) The measured size of the part as it exists
c) An approximate dimension used for general identification
b) The measured size of the part as it exists
What does tolerance refer to in the context of machining?
a) The total amount by which a dimension is allowed to vary
b) The exact size of a part
c) The theoretical size from which limits are derived
a) The total amount by which a dimension is allowed to vary
When examining the fit between two parts, what does clearance refer to?
a) The thickness of the material between parts
b) The space between the mating parts
c) The total allowable size of a part
b) The space between the mating parts
What does a clearance fit allow between two parts?
a) No space between the parts
b) Sliding or rotating between the parts
c) The parts to be permanently fixed together
b) Sliding or rotating between the parts
What is an interference fit?
a) A fit where there is clearance between parts
b) A fit where the parts are designed to fit without any movement
c) A fit where the dimensions of the two parts overlap, such as a pin that’s slightly larger than the hole
c) A fit where the dimensions of the two parts overlap, such as a pin that’s slightly larger than the hole
What does unilateral tolerance mean?
a) Tolerance that allows for variation in both directions
b) Tolerance that allows for variation in one direction only
c) Tolerance that has no variation
b) Tolerance that allows for variation in one direction only
What does bilateral tolerance mean?
a) Tolerance that allows for variation in one direction only
b) Tolerance that allows for variation in both directions
c) Tolerance that requires no variation from the basic size
b) Tolerance that allows for variation in both directions
What does allowance refer to in machining?
a) The intentional difference between the maximum and minimum dimensions of a part
b) The minimum clearance space intended between two parts
c) The maximum tolerance allowed for a part
b) The minimum clearance space intended between two parts
What creates the allowance between two parts?
a) The intentional difference between the maximum material dimensional limits of mating parts
b) The smallest part dimension
c) The tolerance on the fastener threads
a) The intentional difference between the maximum material dimensional limits of mating parts
What are feeler gauges used for in the workshop?
a) Measuring the total weight of components
b) Checking the clearance between two mating parts
c) Measuring the exact dimensions of a part
b) Checking the clearance between two mating parts
What is workmanship in the context of aviation engineering?
a) The skill and attitude of the craftsman
b) The type of tools used in maintenance
c) The cost of the materials used
a) The skill and attitude of the craftsman
Which of the following tools is used to achieve a rough surface finish when filing metal?
a) Polishing cloth
b) Abrasive paper
c) Files with fewer teeth
c) Files with fewer teeth
When drilling a hole and a smoother finish is required inside the hole, what should be used after the twist drill?
a) A reamer
b)A file
c) Abrasive paper
a) A reamer
What is the requirement for all aircraft maintenance organizations regarding precision tooling?
a) To inspect and calibrate tools once a year
b) There is a requirement for all aircraft maintenance organizations to regularly inspect and calibrate their precision tooling
c) To use only new tools for each job
b) There is a requirement for all aircraft maintenance organizations to regularly inspect and calibrate their precision tooling
What is the purpose of a clear labelling system for tools in aircraft maintenance?
a) To identify the tool’s manufacturer and model
b) A clear labelling system should be used to identify to users that the tool being used is within the calibration period
c) To show the tool’s weight and dimensions
b) A clear labelling system should be used to identify to users that the tool being used is within the calibration period
What information should be included on the label of a tool that has been calibrated in aircraft maintenance?
a) The manufacturer’s name and model number
b) The cost of the tool and the name of the technician
c) The date of the last test, when the next inspection or calibration is due, and the authorised person’s signature or stamp
c) The date of the last test, when the next inspection or calibration is due, and the authorised person’s signature or stamp
What information should be included in the calibration records or certificates for precision equipment?
a) Tool name, tool color, and owner’s signature
b) Identification of equipment, manufacturers’ standard used, results, uncertainty of measurement, calibration interval, and limits of permissible error
c) Date of purchase, tool model, and manufacturer’s warranty
b) Identification of equipment, manufacturers’ standard used, results, uncertainty of measurement, calibration interval, and limits of permissible error
What must be done to a measuring tool before it is used?
a) Ensure the tool is visually clean and free from damage
b) Only check if the tool is within the warranty period
c) Ensure the tool will ‘zero’ correctly, meaning it reads zero when measuring faces are properly closed
c) Ensure the tool will ‘zero’ correctly, meaning it reads zero when measuring faces are properly closed
Why is calibration of torque wrenches essential in aviation maintenance?
a) To ensure the tool remains visually appealing
b) To maintain their accuracy and longevity
c) To prevent the tool from becoming too heavy to handle
b) To maintain their accuracy and longevity
Which of the following is used for calibrating torque wrenches in aviation maintenance?
a) A calibrated torque analyser
b) A digital scale
c) A manual pressure gauge
a) A calibrated torque analyser
Who is responsible for calibrating torque wrenches and other measuring equipment in aircraft maintenance?
a) Any technician can calibrate them
b) Approved organisations employing certified personnel
c) Only the tool manufacturers can calibrate them
b) Approved organisations employing certified personnel
How are pressure gauges and transmitters typically calibrated in aviation maintenance?
a) By using hydraulic pumps with water or oil, or pressure generators with oil or gas
b) By using manual hand pumps
c) By checking the pressure against atmospheric conditions
a) By using hydraulic pumps with water or oil, or pressure generators with oil or gas
How is a micrometer typically recalibrated?
a) By adjusting the anvil to match the zero mark
b) By inserting a precision block between the anvil and spindle and adjusting the sleeve until it aligns with the zero mark
c) By replacing the micrometer’s internal components
b) By inserting a precision block between the anvil and spindle and adjusting the sleeve until it aligns with the zero mark
What is used to recalibrate a micrometer?
a) A special digital measuring tool
b) A precision block (test piece)
c) A mechanical gauge
b) A precision block (test piece)
What external factor can affect the calibration process of a micrometer?
a) Extreme temperatures during the day
b) The humidity in the air
c) The age of the tool
a) Extreme temperatures during the day
