Delta Air Lines wants government regulators to seize American Airlines’ new route from Los Angeles to Tokyo’s close-in Haneda Airport, just months after the latter carrier won it.

American has failed to file schedules or offer tickets for flights between Los Angeles and Haneda, Delta said Thursday in a U.S. regulatory filing. Delta said this violated the government’s requirement to start the route within 60 days. Delta ceded that access to Haneda to American in June after a protracted fight between the two airlines.

American plans to respond to the U.S. Transportation Department regarding Delta’s claim, spokesman Matt Miller said Friday in an interview.

–With assistance from Mary Schlangenstein in Dallas.

This article was written by Michael Sasso from Bloomberg and was legally licensed through the NewsCred publisher network.

Photo Credit: Toby World Square at Narita Airport. 掬茶 / Wikimedia Commons