Let me tell you how Blockchain could help.
Blockchain could ensure inspection and approval of certificates through consensus. And, if a problem did come up, blockchain could ensure that the provenance of the materials used by the auto, aircraft and train manufacturers is known.
Blockchain could also provide a “birth to death” view of the material in the supply chain, which would make that task of finding where those substandard products are much easier.
So, whether it’s tracing manufacturing or any other records blockchain can help.