By Isabel Goyer At the General Aviation Manufacturers Association (GAMA) meeting in Washington, D.C., this spring came the blockbuster announcement that the industry and the FAA are 100% behind the retirement of 100 Low Lead aviation gasoline and the transition to nothing but unleaded aviation fuels by 2030, which is a little less than nine years away. The announcement was made by then-outgoing and now-former FAA Administrator Steve Dickson, a parting gift to aviation, perhaps, as he vacated the agency for reasons unrelated to avgas. It’s an issue, by the way, that no one in Washington except …