Hi, maybe another view is, 70% have passed the inspection, 30% have been removed as being suspect and not passing the inspection. Generally they may seem to be repairable.*
I guess they will be inspected and form part of the ongoing investigation and not release after any repair.
I also guess that those in the know are familiar with the history of the blade in question. So will look forward to the final report to emerge in the fullness of time.