The Federal Aviation Administration (FAA) is seeking qualified companies to provide materials compatibility laboratory testing and evaluation services to support the Piston Aviation Fuels Initiative (PAFI) and Eliminate Aviation Gasoline Lead Emissions (EAGLE) programs. The contract will be a hybrid type, combining Firm Fixed Price for non-severable services and Labor Hours for severable services, with the work performed in accordance with the solicitation's specifications. This opportunity is open to the full market under NAICS code 541380, which has a size standard of $19.0 million. Proposals must be submitted by 1500 hrs. ET on June 18, 2026, and any late submissions will not be considered. The location for performance of services is not specified in the description.