AFAB 115 MIDTERM Questions and Answers

What is a technician important responsability o :# Identifying and applying specifications within acceptable toleranceibility What gives the aircraft the capability to withstand aerodynamic loads ? o :# the strength of thousands of fasteners which hold it together What does the Strength of aircraft fasteners depends on? o :# the technician's who drill and prepare the holes in which those fasteners are installed. What is fundamental for good joint performance and durability o :# Clean, round holes within tolerance and with minimal burrs For most DOD manufacturers you must be o :# certified by the manufacturer/employer to perform hole drilling operations Tolerance is o :# the plus or minus allowances in hole dimensions 2024/2025 2 | P a g e Accurate holes can only occur if o :# the drill is at a 90 degree angle to the surface being drilled. A drill or egg cup should be used to o :# ensure a perpendicular drill. To minimize fatigue, and enable fasteners to sit correctly, it is important that o :# proper deburring,chamfering,and edge breaks are performed. To prevent delamination and breakout when drilling composites you must o :# always support the material from the backside To minimize delamination when drilling in graphite/carbon or composites you must o :# always keep the drill rotating as it touches the surface and during withdrawal. 2024/2025 3 | P a g e How do protect Wire bundles and hydraulic lines when drilling ? o :# using drill stops To check hole diameters and dimensions o :# use a ball gauge and micrometer What is important to note while drilling o :# that a sharp drill it will produce large uniform chips technicians must o :# Prevent all possible defects when generating holes and ensure product quality and cost efficiency