The Department of Transportation (DOT), Federal Aviation Administration (FAA) announces the opportunity to apply for funds for the FAA Fueling Aviations Sustainable Transition (FAST) Grant Program, established under Section 40007 of the Inflation Reduction Act of 2022. The grant program will have elements focused on sustainable aviation fuel (SAF), to be termed FAST-SAF, and elements focused on low-emission aviation technologies, to be termed FAST-Tech. The amount of available funding for the FAST Grant Program is $244.53M and $46.53M for FAST-SAF and FAST-Tech, respectively. The purpose of the FAST Grant Program is to make grants available to eligible entities for projects that support sustainable aviation fuels and low-emission aviation technologies in line with the goals of the United States Aviation Climate Action Plan available at https://www.faa.gov/sites/faa.gov/files/2021-11/Aviation_Climate_Action_Plan.pdf.