A few months after an audit, the auditor returns to the company to verify that...

The activity described is part of the Audit Follow-Up phase. According to ISO 19011:2018 – Clause 6.6.2, follow-up activities are conducted to verify:

Whether corrective actions have been implemented, and

Whether those actions were effective in addressing the nonconformities identified during the audit.

The PECB Lead Auditor Guide – Domain 6 confirms that follow-up audits or activities may occur weeks or months after the main audit, especially when major or systemic nonconformities were identified.

This phase ensures the continuous improvement of the AI Management System and is crucial for maintaining long-term conformity.