A major repair requires the installation of AN3 bolts. What fractional size drill would be required for this installation?

To install AN3 bolts, it's important to consider the diameter of the bolts and the appropriate drill size needed for creating an accurate clearance hole. AN3 bolts are typically 3/16 inch in diameter.

When preparing for the installation, the drill size chosen must provide a suitable hole to accommodate the bolt without compromising structural integrity or causing issues with securing the bolt. The fractional size drill that closely matches AN3 bolts is 3/16 inch, which ensures that the bolt can pass through the hole freely and allows for proper clearance according to aviation standards.

Using the correct drill size is critical in aviation maintenance practices where precision is essential for safety and reliability. Thus, for AN3 bolts, the 3/16 inch drill size is the correct choice to ensure a proper fit for installation.