According to a recent law suit, when you step onto a United Airlines flight, the in-flight entertainment you enjoy may not be properly licensed.

Sony Music brought a lawsuit against the airline, Inflight Productions and Rightscom with a complaint that copyrighted music from some of the record company's artists was being used in flight without proper licensing. The music at issue includes tracks from Carrie Underwood, Britney Spears, Justin Timberlake and Michael Jackson.

The Hollywood Reporter notes that the complaint was filed in New York federal court in October. It alleges that the defendants duplicated music and music videos without compensating Sony, and uploaded them to their own servers to make available for passengers.

United has declined to comment on the issue, but according to the Hollywood Reporter, the airline is still using the music while the matter is pending.