Re:Vancouver seaplane company to resume test flights with el...
by biggieshellz on Monday January 25, 2021 @03:12PM
(#25908125)
The only one I can think of would be the Rotax 912, which is certified to run on mogas ("motor gas" / unleaded). But as you said, that's more for light sport and trainers.
Most fuel farms at airports sell 100 octane leaded fuel by default. It is normally the odd exception that sells unleaded fuel.
The piston engine seaplanes will be using leaded fuel (as will any piston powered small plane with the exception of a few homebuilts and trainers). The turbine ones use regular Jet A.