Well, this sounds like rocket science to me, i.e. very complicated but I still would like to ask a question that might cost me.
There are rumours that AVGAS 100LL will not be available as of 2004/2005, what then? The low compression, low power engines will be able to fly on water but what about the high power engines like the IO540, IO550 etc? What about the Turbo engines? The world-wide GA fleet will be grounded within a day.
I know that Continental and a French company are in process of developing Diesel engines. The French should get the FAA approval this year while Continental is well behind. The engines are rated at 200, 235 and 250 HP, yet a very small segment of the market.
[This message has been edited by AC-DC (edited 29 January 2001).]