After collecting performance data about defects produced by a milling machine, what should a quality assurance technician do next?

Determining if the variations in defects produced by the milling machine meet customer specifications at an acceptable level is a crucial next step after data collection. This assessment allows the quality assurance technician to evaluate whether the machine's performance is aligned with the defined quality standards. Understanding how defect levels relate to these specifications helps in identifying whether the process is functioning within acceptable limits and can inform subsequent decisions on whether corrective actions are necessary.

If the variation exceeds the acceptable thresholds, then further investigation into the root causes of the defects must take place. This step could lead to considerations for calibrating the machine, retraining operators, or even ordering new parts as part of the solution process. However, without first establishing how defect levels compare to customer requirements, any subsequent action taken may not effectively address the underlying issues. Thus, immediate evaluation against specifications is essential to ensure that any further steps taken are focused and relevant to quality improvement.