For the first time, the International Civil Aviation Organization (ICAO) has come up with proposed standards to reduce aircraft carbon emissions worldwide. “The very smallest of the business aviation aircraft would be exempt, so that would be generally aircraft under 12,500 pounds,” noted NBAA’s Chief Operating Office Steve Brown. “It’s only when you get to larger aircraft, where you have larger fuel burns and therefore more emissions, that its useful to try and measure emissions and apply technology to make significant reductions in the future that are beneficial.” ICAO will vote on the plan later this year, and Browns said he is “cautiously optimistic” it will pass.