In my past two columns I put forward the idea that for the future of general aviation, we need to update technology to meet the demands of a changing world. I would like to further that discussion and answer a few of the comments from readers.
The first step is to forget the 100 unleaded avgas program and go to a two fuel system. The two fuels would be very similar, with one being the present 100LL and the other being the same fuel only without the lead. It would have an octane of around 94 lean rating (call it 94UL) and would meet all of the other properties of 100LL.
Now I know there is the problem of FBOs needing two fuel systems. But many of them presently have two systems or sell mogas.
The advantages of the two fuels are very significant. [Read more…]