This is a solicitation for a Firm Fixed-Price contract to perform a heavy maintenance check on a specific Boeing 737-400 aircraft for the U.S. Marshals Service. The work must be performed at the contractor's repair facility within the continental U.S., with the aircraft delivered to that location by the government. The estimated budget for the project is between $500,000 and $1,000,000. The period of performance requires all work to be completed within 45 days from an induction date of approximately June 5, 2026. Key evaluation factors are technical capability, past performance, and price.