Not at all. The 'issue' could be a technical issue, a cultural issue, a corporate issue, a documentation issue, a legislative issue, a personal issue.
If you stop diagnosing when you find a faulty part, you aren't diving deep enough. Ask why some more -- what allowed us to even ship a faulty part in the first place? The sensors in the plane are a faulty technical design, but what systemic issues enabled that faulty design to be shipped at all? Those are the root cause issues.