[Swordmaker]

If you believe there was an 80 joule ignition source in the fuel tanks, you are simply swallowing a line of crap that is unsupportable by facts.

Uh, DiogenesLamp? 80 Joules is only ~0.0225 Watt Hours. You can easily produce a lot more energy than that with a AAA battery which have over 5000 joules of energy stored in an Alkaline AAA cell. All it has to do is produce a tiny spark.

[DiogenesLamp]

Uh, DiogenesLamp? 80 Joules is only ~0.0225 Watt Hours.

A Joule is a "watt-second", which equates to 1 watt for a duration of one second. "80 joules" is equivalent to 80 amps for a duration of one second.

Again, this is hot enough to ignite paper, let alone jet fuel.

You can easily produce a lot more energy than that with a AAA battery which have over 5000 joules of energy stored in an Alkaline AAA cell.

Yes, 5,000 is more than 80, but 80 is the amount that testing revealed would be necessary to attain an ignition of Jet fuel at a temperature of 96 degrees. (if I remember correctly)

This is not an amount of energy that you could accidentally get into the fuel tank. From what I have read, the fuel sensors are capacitive, which means they cannot conduct a current flow, and so there isn't even a means by which the energy can be delivered to create an 80 joule load.