What is the primary purpose of remove layout tape from the doubler before drilling?

The primary purpose of removing layout tape from the doubler before drilling is to avoid interference during the drilling process. When layout tape is left on, it can create a barrier or thickness that may lead to misalignment or other drilling complications. By removing the tape, the surface is prepared properly, ensuring that the drill bit can make clean and precise holes without any obstruction.

This precision is crucial in aerospace assembly, where exact specifications must be met to maintain structural integrity and safety. Additionally, if there were any slight discrepancies due to the tape, it could lead to issues in the assembly process, such as misfitting components or incorrect hole placement. Therefore, ensuring a clear and unobstructed drilling area is essential for achieving the desired outcome in assembly tasks.