A manufacturing facility consistently finds that a specific machine tool loses its calibration, resulting in a recurring nonconformity. Each time, the maintenance team recalibrates the tool, which temporarily resolves the issue. According to the principles of continual improvement, what is the most critical next step?
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A
Increase the frequency of the recalibration schedule.
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B
Assign a dedicated operator to monitor the machine tool constantly.
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C
Initiate a root cause analysis to determine why the calibration is failing.
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D
Update the work instructions to include the recalibration step.