Control Plan Adherence Audit
Audit how well production follows the approved control plan, from CTQs and inspection timing to measurement systems and reaction plans, so gaps are found before they affect quality.
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What's inside this template
Control Plan Availability and Revision Control
- Current approved control plan is available at point of use
- Control plan revision matches the latest approved release
- Process steps and characteristics listed in the control plan match the actual operation
- Operators can access the control plan or work instruction when needed
- Any temporary deviations are documented and approved
CTQ Characteristics and Product Checks
- CTQ characteristics are clearly identified for the process
- Required CTQ measurements are being performed
- Recorded CTQ values are within specified limits
- Sampling method matches the control plan requirement
- CTQ records are complete, legible, and traceable to the lot or batch
Inspection Frequency and Timing
- Inspection frequency matches the control plan
- Checks are performed at the specified start-up, in-process, and end-of-run intervals
- Missed or overdue checks are identified and addressed
- Frequency changes have been formally approved when applicable
Measurement System and Equipment
- Measurement equipment used is specified in the control plan
- Measurement equipment is within calibration or verification status
- Measurement method is being followed consistently by operators
- Gauge or measurement system issues are escalated promptly
Reaction Plan and Escalation
- Reaction plan is documented for out-of-specification conditions
- Operators know the immediate containment action required
- Escalation to supervision or quality is performed when limits are exceeded
- Nonconforming product is identified, segregated, and dispositioned correctly
Common use cases
Frequently asked questions
What does this audit help verify?
It checks whether the shop floor is following the approved control plan as written. That includes CTQ checks, inspection frequency, measurement methods, and escalation steps when something goes out of spec.
Who should use this template?
Quality teams, manufacturing engineers, and supervisors can use it during routine audits or layered process checks. It is also useful for plants that need evidence of control plan compliance for internal reviews or customer requirements.
Can this be used for multiple lines or products?
Yes. You can clone it for each process, line, or product family and tailor the CTQs, frequencies, and reaction plans to match the specific control plan. That makes it easier to compare adherence across areas.
What kind of evidence should be captured?
Capture revision status, CTQ records, sampling results, calibration status, and any missed checks or deviations. Clear evidence makes it easier to confirm whether issues are isolated or part of a recurring process gap.
How does this template support corrective action?
It highlights where the actual process differs from the control plan, so teams can assign actions quickly. Findings can be routed to quality, operations, or maintenance for containment and follow-up.
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