Slovenian aircraft manufacturer Gogetair has taken a different approach to the issue of avgas availability worldwide. While there are a number of piston engines capable of operating on more readily available jet fuel, late last year, Gogetair flew its top-of-the-line G750 aircraft with a Turbotech TP-R90 turboprop engine. Rated at roughly 122 shaft horsepower, the French-built TP-R50 is a regenerative turbine with a heat exchanger to mix intake air with exhaust gas to be reinjected into the combustion chamber. This enables a low fuel burn and the flexibility to use multiple types of fuel.