What should be done if the countersink depth is not within the tolerance range?

Adjusting the tooling and retrying is essential when the countersink depth is not within the specified tolerance range. This is because proper countersinking ensures that fasteners sit flush with the surface and do not interfere with the aerodynamics or structural integrity of the assembly. If the countersinking is too shallow or too deep, it could lead to issues such as inadequate fastening strength, fastener failure, or surface irregularities that can affect performance.

In aerospace assembly, maintaining precise tolerances is critical, as any deviation can have significant safety and quality implications. By adjusting the tooling, the technician can correct the countersink depth to meet the specifications, ensuring that the final assembly meets the required standards and performs reliably. Retry is an integral part of the manufacturing process, allowing for re-evaluation and correction before final assembly and inspection.