When should you attach the air line to the drill motor in relation to the drill guide?

Attaching the air line to the drill motor before sliding the drill guide onto the drill bit is critical for ensuring safety and efficiency during the drilling process. This procedure allows you to control the power of the drill motor while keeping the drill guide firmly in place. By connecting the air line first, you can ensure that the drill motor is either not running or is in a safe, controlled state when you manipulate the drill guide and drill bit.

This sequence helps prevent accidental activation of the drill, which could lead to injuries or misalignments in the assembly. It also allows for better control of the drill's depth and accuracy when the drill guide is positioned over the workpiece. Ensuring that the drill guide is securely in place and then attaching the air line promotes a clear and error-free operation, which is essential in aerospace assembly tasks where precision is paramount.

This methodical approach is standard in machining and aerospace assembly practices, where the potential for error is minimized by maintaining control over equipment and tool readiness before proceeding with work that requires precision.