Navigating ISO 9001 and AS9100 Calibration Requirements with ISO 17025:2017 Accredited Labs
- Greg Weedon

- Oct 27
- 3 min read
In today's fiercely competitive environment, maintaining high-quality standards is essential for businesses, particularly in the aerospace and defense sectors. Meeting ISO 9001 and AS9100 calibration requirements is not merely a regulatory obligation; it represents a strong commitment to quality that can significantly improve customer satisfaction and operational efficiency. This post outlines practical steps to comply with these standards, emphasizing the importance of using an ISO 17025:2017 accredited lab to ensure calibration processes meet necessary benchmarks.
Understanding ISO 9001 and AS9100
ISO 9001 is one of the most recognized standards for quality management systems (QMS) and applies to any organization regardless of its size or field. It emphasizes meeting customer expectations and delivering satisfaction consistently. For example, a recent survey showed that companies certified in ISO 9001 have reported up to a 30% increase in customer satisfaction levels.
AS9100 builds on ISO 9001, specifically addressing the unique requirements of the aerospace industry. It incorporates additional stipulations related to safety, reliability, and compliance with regulations. Organizations involved in aerospace manufacturing or service delivery must adhere to both standards to ensure their products meet high safety and quality standards.
Both ISO 9001 and AS9100 underscore the importance of calibration to ensure measurements and testing equipment yield accurate and reliable results.
The Importance of Calibration
Calibration involves verifying that measurement instruments provide accurate data. In fields like aerospace, where precision is critical, inaccuracies can lead to severe consequences, including safety issues and financial losses. A study indicated that companies with robust calibration processes can reduce operational errors by up to 25%.
To comply with ISO 9001 and AS9100, organizations must develop a calibration program that guarantees all measuring and testing devices are routinely calibrated against recognized standards. This approach not only aids in maintaining compliance but also elevates the overall quality of products and services offered.
Key Steps to Comply with Calibration Requirements
1. Establish a Calibration Policy
The initial step for compliance with ISO 9001 and AS9100 is to create a clear calibration policy. This document should outline objectives, responsibilities, and procedures associated with calibration within your organization. Effective communication of this policy ensures that all relevant staff understand its importance and their responsibilities in the calibration process.
2. Identify Equipment Requiring Calibration
Next, identify all measurement and testing instruments that need calibration. This encompasses tools, gauges, and devices used in production, inspection, and testing processes. A detailed list should include:
Equipment type
Manufacturer
Model number
Calibration frequency
Creating this comprehensive inventory serves as a solid foundation for your calibration program.
3. Determine Calibration Intervals
Calibration intervals should consider the manufacturer's recommendations, equipment usage, and the critical nature of the measurements. For instance, a micrometer used in a precision engineering workshop may need recalibration every three months, while a simple measuring tape used in similar conditions may only require recalibration once a year.
4. Use an ISO 17025:2017 Accredited Lab
Partnering with an ISO 17025:2017 accredited laboratory is one of the best ways to ensure compliance with calibration requirements. This standard confirms that testing and calibration labs operate effectively and produce valid results. Using an accredited lab enhances your confidence in the accuracy and reliability of calibration processes. Businesses that regularly employ accredited labs have reported a 40% reduction in errors in measurement data.

5. Document Calibration Activities
Documentation is a vital aspect of meeting ISO 9001 and AS9100 requirements. Keep detailed records of all calibration activities, including calibration certificates, results, and corrective actions. These records provide essential evidence during audits and help identify trends or potential issues requiring attention.
6. Train Personnel
Ensure all staff involved in the calibration process receive proper training. This training should cover calibration procedures, the significance of accuracy, and how to interpret calibration results. Regular training sessions can help reinforce the importance of calibration and keep employees informed about changes in procedures or standards.
7. Conduct Internal Audits
Carrying out regular internal audits is essential for evaluating the effectiveness of your calibration program. These audits should assess compliance with established procedures, highlight areas for improvement, and ensure that all equipment is calibrated as mandated. Internal audits promote compliance and cultivate a culture of continuous improvement within the organization.
Final Thoughts
Conforming to the calibration requirements of ISO 9001 and AS9100 is critical for ensuring quality in the aerospace and defense sectors. By establishing a solid calibration program, utilizing an ISO 17025:2017 accredited lab, and fostering a quality-driven culture, organizations can meet regulatory standards and improve customer satisfaction.
Investing in effective calibration processes safeguards your organization against compliance challenges and significantly contributes to your business's success and reputation. By following the actionable steps outlined in this post, quality professionals and small business owners can confidently navigate the complexities of calibration requirements.





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