[gatex]

"Recently, I blew out a hydraulic actuator on a speedbrake that had never failed in the history of F-16 operations. "

That was a mechanical failure -- not a chemical explosion that had never happened before.

[Rokke]

"That was a mechanical failure -- not a chemical explosion that had never happened before."

The chemical explosion was the result of mechanical failure. It wasn't "spontaneous". It was initiated by a spark. And spark induced explosions of fuel vapor have happened countless times.