To amend title 49, United States Code, to include a public airport in use by an air reserve station as a primary airport.

HR 2558 amends federal law to automatically classify public airports used by air reserve stations as "primary airports" for transportation funding and planning purposes. This change directly affects public airports hosting air reserve units (like Air National Guard facilities), ensuring they qualify for primary airport benefits without needing separate designation. The key provision adds a specific exception to existing law, stating such airports "shall be considered a primary airport" under Title 49, U.S. Code. This simplifies eligibility for federal airport funding and infrastructure programs for these military-adjacent airports.