[TJC]

The sad thing is Boeing had to spend a lot of $ on a non issue. I remember how pissed they were. They went into detail at the time (After dinner and a few drinks), but I do not remember much. Based on my dealings with the NTSB and FAA in the investigation I was on, they are very political and almost totally nontechnical.
I never believed it was the fuel tank.

[Grampa Dave]

The biggest fear my pilot friends had with the 747 was going to sleep while it flew itself.

That tank didn't blow up anymore than the Bergelar accidentally stole classified documents.