What should an inspector provide if an aircraft is found to be un-airworthy?

When an inspector determines that an aircraft is un-airworthy, it is crucial for them to provide a signed and dated list of discrepancies. This documentation serves as a formal record that outlines the specific issues found during the inspection that contribute to the aircraft's un-airworthy status. The list is essential for both the owner and the maintenance personnel, as it details what repairs or maintenance actions are required to bring the aircraft back into compliance with safety regulations.

This process ensures accountability and provides a clear path for addressing the discrepancies. Furthermore, having a signed and dated document creates an official record that can be important for regulatory purposes and future inspections. It outlines the inspector's findings and thus helps to maintain high safety standards in aviation.

In contrast, verbal assurances of safety lack the necessary formality and documentation and do not provide a actionable plan for addressing the issues. Similarly, a maintenance approval certificate is typically issued when an aircraft is deemed airworthy, while a temporary flight waiver does not apply when an aircraft is found un-airworthy and should not be flown until the discrepancies are resolved.