Some looked to the skies, pleading for relief from the greatest mystery in modern aviation.

Last month they launched a challenge that threatens to topple one of the pillars of modern aviation.

Modern aviation piston engines designed to run at high altitudes typically include a turbocharger (either high pressure or turbonormalized) rather than a supercharger.

This means there's a chance that an expensive and complex salvage operation could simply end up raising more questions about modern aviation's most troubling mystery than it answers.