“Mythbusters” proved that a spark of the type described, in exactly the same conditions, would set off a massive explosion. It stunned the guys on “Mythbusters” as to the power of the explosion.
Exact same engineering, design, scale (with less fuel of course)?
Would like to see that show.
You know how they do things. It was precise. They used a couple of different voltages/sparks, all within the area of the probable. They heated the remnants inside the tank to exactly the temperature thought to have existed on the tarmac that day.
In this case, scale matters.
But it's not the explosion of the fuel vapors that I doubt, it's the ignition mechanism.
For instance a missile that missed, and shot hot fragments into that tank, would produce the same explosion. And the tank would be so damaged that the initial penetration would be next to impossible to spot, thats assuming that the explosion didn't form the "into" hole so they looked like "out of" holes, or just rips in the the tank.
I'm not saying that *was* the mechanism, just that absent any other physical evidence, either explanation, spark or hot fragment, works equally well.