Missa
En-Route
No, but they can get to 97 without additives like TEL.
Yep then we have the 80-20 problem. The 20% of the piston fleet that flys 80% of the hours will not work on the 97UL. The fleet is too small to break into two fuels. (and is why 80 went away) The fuel MUST be 100 Octane to not cause significant performance degradation on the high powered (high $$ and high Spenders) end of the fleet.
GAMI claims G100UL. Will these be viable? I'm not claiming special knowledge here, just a bit of concern. I'm betting those that have "high-performance" planes will end up needing STC's. Not ideal, but I think we'll get 100 octane without TEL. The cost that's unknown right now. I'm hoping that GAMI or BP (or anyone) can come through with a drop-in, economical, fuel. I'm not exactly holding my breath
Too bad turbines aren't more economical.
If it's 100 Octane, the high performance planes should have no problems with it and would not need a performance related STC.
If the fuel is not compatable with some material currently in the fuel systems that's a WHOLE other problem.