Notice Number: NOTC2273
FAAST Blast — May 06, 2010 Biweekly FAA Safety Briefing News updateEPA Issues Proposed Rulemaking for Leaded Avgas
On April 28, 2010, the Environmental Protection Agency (EPA) issued an advance notice of proposed rulemaking (ANPRM), the first step in a process that may lead to standards mandating GA’s transition to unleaded avgas. This action allows the public to comment on the current data being considered to develop standards to control lead emissions from piston-powered aircraft.
Avgas is the only remaining transportation fuel in the United States that contains lead. FAA is committed to continue working with the GA community to test, adopt, and certify a new aviation gasoline fuel standard. In addition, FAA established a GA alternative fuels program at the FAA Technical Center to continue research of unleaded aviation fuels and has issued many supplemental type certificates (STCs) to allow aircraft with lower-performance engines to operate with unleaded automobile gasoline.
Despite ongoing research, currently there is no definitive replacement for unleaded avgas available that will meet the needs of all GA aircraft. EPA will use data gathered through this comment-seeking process, as well as work with FAA and industry, to decide whether to enact restrictions on the use of leaded avgas. EPA estimates that lead emissions from aircraft using leaded avgas accounts for approximately half of the national inventory of lead emitted to air.
EPA will accept public comment on the ANPRM until June 28, 2010. To view the ANPRM and to provide comments, go to www.regulations.gov and search Docket ID: EPA-HQ-OAR-2007-0294.