LONDON, England (CNN) -- Dozens of trans-Atlantic flights from the United Kingdom were delayed Saturday after a glitch in an air traffic control system in Scotland, but the problem was fixed a few hours later and authorities were working to get the flight schedule back to normal.
Engineers found a malfunction Saturday morning in the system that controls the airspace across the Atlantic Ocean from Scotland, a statement from the National Air Traffic Services said.
The agency said it had reverted to back-up equipment as engineers worked to fix the system. The agency said the problem did not create a safety issue but could cause delays in flights that could last hours.
By midday, the agency said, "operations were back to normal" and the agency confirmed it was back operating on a "normal, automated system."
Airlines were working to clear delays. British Airways said it has had minor delays, but flights were now running on a normal schedule.