HOGE asked: What are the consequences of running a turbine on non Jet A1 fuel?
Depends on the turbine. Those of us "of a certain age" will remember when turbine helicopters had heaters designed to run on gasoline. They didn't like kero much, and were so finicky that you could easily "foul the plug" or something and find yourself freezing your tootsies. Back in those bad-old-days of Janitrols in Jetrangers, we would routinely put in up to one-third avgas in the jet fuel with no restriction. I don't have my RR manuals in front of me, but I believe that little model 250 sewing machine would probably run fine on orange juice if it's all you had.