Unleaded aviation fuels developed by Shell and Swift Fuels will move on to Phase 2 testing in the FAA’s Piston Aviation Fuels Initiative, the FAA announced today. The tests are part of the FAA’s ongoing efforts to develop an acceptable unleaded fuel for small airplanes. “Small aircraft are the only mode of transportation that still relies on leaded fuel,” said Transportation Secretary Anthony Foxx. “We’re committed to finding safe fuels that benefit the environment and our general aviation community.”
Source: avwebFAA Names Avgas Finalists