What must you do after detecting and recording a major defect during a daily inspection?

After detecting and recording a major defect during a daily inspection, it is essential to inform the operator and refrain from operating the vehicle until the defect has been repaired. This approach prioritizes safety, as operating a vehicle with a major defect could lead to significant risks, including potential accidents, further vehicle damage, or even personal injury.

Reporting the defect ensures that appropriate maintenance or repairs can be carried out by qualified personnel who can properly assess the issue. This step is in compliance with safety regulations and standards governing vehicle operation, which stress the importance of addressing any major defects before the vehicle is driven again. By doing so, you help maintain the vehicle's safety and reliability, ultimately protecting not just the driver but everyone on the road.