Key things here:

The gas used in the small planes with piston-driven propellers has lead in it. Yeah, the same stuff that was banned from automotive fuel because it causes brain damage in kids.

That lead in the fuel airplanes burn? It ends up in kids blood

There’s a new fuel mix starting to be available which doesn’t contain lead, and which works for all airplanes. It’s available in some places in the US, but not all of them yet.

The FAA has a plan to make going lead-free a requirement by 2031…but right now there isn’t anything stopping airport owners (often local governments) from making the switch happen faster. Only thing which might stop this is that the Republican version of the FAA reauthorization bill contains a requirement that airports keep on selling leaded fuel forever, so it’s also important to stop that from becoming law.

  • Rivalarrival
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    1 year ago

    I don’t understand how the most viable solution is unleaded avgas and not a widespread transition away from spark ignition. Jet-A is cheaper than 100LL, let alone 100UL, but planes equipped with equivalent Jet-A diesel engines have significantly lower fuel burn and much higher range.

    I would think that flight schools and other operators would be pushing their fleets to diesels just for the lower operating costs.