The US Department of Transportation has fined Gulf carrier Qatar Airways for violating no-fly rules in prohibited airspace.
The DOT said it issued a $185,000 fine for operating where no-fly rules were in effect.
The agency did not disclose the no-fly zones it violated but is thought to include war-torn territories in Iraq, Yemen and Ukraine.
The US has jurisdiction to impose fines as Qatar Air was flying the routes under a codeshare agreement with American Airlines.
"The FAA forbids U.S. flight operations over certain regional conflict zones around the world. The Department takes aviation safety and security matters very seriously, and will continue to take enforcement action when these important safety and security restrictions are not followed," transportation secretary Anthony Foxx said in a statement.
"Airlines have a responsibility to ensure that they do not fly their planes through prohibited airspace."
An investigation was carried out by the department’s Office of Aviation Enforcement and Proceedings.
The US said it was obliged to take action due to the flights carrying the AA flight code.
