Isn’t it time for the FAA to allow pilots to choose their fuel? Seriously, what pilot is going to put fuel into their EXPENSIVE AND BELOVED aircraft to damage it? Do they really think pilots are so stupid that they WANT to fall out of the sky?
Most people follow mfr. recommendations for what fuel to put in their car. The NTSB doesn’t get involved in that. Enough time has been wasted on this nothing burger. If a particular engine needs hoses changed to properly use a particular fuel, that should be easy to do. STC’s are another form of tax. We don’t need more taxes.
On another note, as many above have already observed, the EPA has NOT proven leaded fuel is an environmental danger. They “allow” certain ppm limits of lead and far more dangerous chemicals in water supplies, foods, cosmetics, etc. Where is the proof of extensive lead contamination?