Boulder Adds UL94 Under Transition Plan

# Synopsis for CPA Members

Boulder Municipal Airport has begun offering UL94 unleaded avgas ahead of Colorado’s 2030 phaseout deadline, with the first delivery arriving July 1st and pricing matched to 100LL through state funding support. The airport anticipates that up to 70% of its based aircraft can use UL94, with plans to add Swift’s 100R unleaded fuel within the next year to accommodate the full piston-powered fleet, and will help reimburse STC costs for operators making the switch. This positions Boulder alongside other Colorado airports advancing the FAA’s national lead-elimination initiative, giving Colorado pilots more timely access to compliant unleaded fuel options.