> this is why aviation fuel is still leaded Just in case anyone is alarmed, only Avgas is leaded. That's used in ICE / piston engines, generally installed on

> this is why aviation fuel is still leaded Just in case anyone is alarmed, only Avgas is leaded. That's used in ICE / piston engines, generally installed on private aircraft and small regional airliners up to 10 seats or so. It is hoped that alternatives to leaded Avgas will be approved in 2018 or soon thereafter. The vast, vast majority of passenger-kilometres flown each day use Avtur ( kerosene ) which is not leaded.