AFAB 115 Midterm Questions and Answers

What does the capability of an aircraft to withstand aerodynamic loads depend on? o :# The strength of thousands of fasteners What does the strength of aircraft fasteners depend on? o :# The technician who drills and prepares the holes in which the fasteners are installed What is an important responsibility of a technician? o :# Identifying and applying specifications within acceptable tolerance What is fundamental for good joint performance and durability? o :# Clean, round holes within tolerance and with minimal burrs What minimizes cracks in drilled material? o :# Accurate hole drilling Why must holes be accurately drilled? o :# As holes are added to the aircraft structure, they can weaken the structure in which they are drilled 2024/2025 2 | P a g e What is one of the technicians most critical and important jobs? o :# Hole generation What is the single largest number of defects or errors in aircraft manufacturing associated with? o :# Hole generation, or more accurately the generation of inaccurate holes What do DOD manufacturers have to be in order to generate holes? o :# They must be certified by the manufacturer/employer to perform hole drilling operations Who does the ultimate responsibility for accurate hole generation rest on? o :# The individual technician performing the work What must a technician do when drilling holes? o :# Prevent all possible defects when generating holes Ensure product quality and cost efficiency What is tolerance? o :# the plus or minus allowances in hole dimensions 2024/2025 3 | P a g e What is the only angle accurate holes can be drilled at? o :# 90 degrees What ensures a perpendicular drill? o :# An egg cup or drill block How do you minimize fatigue and enable fasteners to sit properly? o :# Properly perform deburring, chamfering, and edge breaks What do you do to prevent delamination and breakout when drilling composites? o :# support the material from the backsid