The Associated Press is reporting that several airports have asked a federal court to stop the FAA’s plan to close 149 contract air traffic control towers, accusing the agency of violating federal law meant to ensure major changes at airports do not erode safety. Central Illinois Regional Airport in Bloomington, Ill., has joined other airports, including those in Spokane Airports in Washington state, and the operators of Florida airports in Naples, Ormond Beach and Punta Gorda. The court combined the suits into a single case Thursday.