WASHINGTON — The Federal Aviation Administration downgraded Mexico's aviation safety rating Friday due to worries about the country's safety oversight.
The action will not stop flights between the two countries, but it will prevent Mexican airlines like AeroMexico from expanding service to the United States, the agency said.
Mexican airlines also will not be able to carry passengers to or from the United States in so-called code-sharing agreements with US airlines. Code-sharing means one airline puts its code or symbol on another carrier's flight and sells the seats as if the plane were one of its own.
Delta Air Lines, the world's largest airline, said in a statement Friday that it will remove its code from AeroMexico flights.
"Our customers are still permitted to travel on AeroMexico but must be rebooked with an AeroMexico flight number to do so," Delta spokesman Kent Landers said in a statement. The airline said it will work with the affected AeroMexico codeshare passengers so there is "minimal impact to their travel plans."