What is the correct action when engineering documents indicate additional holes are countersunk to the same depth as existing holes?

When engineering documents specify that additional holes are countersunk to the same depth as existing holes, it indicates that the depth requirement is already defined and consistent with the existing design. In this case, the engineering specifications serve as the definitive guide, suggesting that no additional checks are necessary since the depth is already verified with the existing holes. The purpose of counter-sinking is to create a conical recess that allows for the smooth seating of fasteners. If the depth is confirmed to match the existing holes, the need to recheck the cutter depth is eliminated, streamlining the process for the mechanic.

Other options imply actions that would not be relevant under these circumstances. For example, checking the cutter depth might introduce unnecessary delays since the engineering documents clearly state the required specifications. Additionally, checking the diameter of the holes wouldn't be applicable based on the context of the question since the concern is solely about matching the countersink depth. Lastly, proceeding without checks might lead to quality issues if there weren't any clear specifications, but since they have been provided, it is unnecessary to take further action. Thus, knowing that the conditions are already laid out aids in efficient use of time and resources in the assembly process.