CHARLOTTE, N.C. -- There is new information about the mechanical issue that caused an international flight to reverse course in mid-air on Wednesday night.

American Airlines Flight 730 departed from Charlotte Douglas Airport to London at around 7 p.m.

However, when the pilot encountered the issue, the plane began circling above Davidson County to burn fuel before returning to Charlotte.

Now, NBC Charlotte has learned the crew reported a concern about a flap.

Fortunately, the plane landed safely in Charlotte at 11:30 p.m. after burning fuel in the air for about three hours.

The plane had 258 passengers and 16 crew members aboard. American Airlines says an indicator light came on shortly after takeoff.

NBC Charlotte found an audio recording from air traffic control which describes "a flap issue" and an "overweight landing".

The tower also asked about the amount of fuel and number of people aboard in case of emergency.

A spokeswoman for American Airlines told NBC Charlotte the amount of maintenance time on a plane depends on several factors, including where it's going. A transatlantic flight requires a higher level of maintenance.

American Airlines says the passengers were booked in hotels until the next available flight.