Bluetooth speaker name forces United Airlines flight to return to Newark after four‑hour delay

United Airlines flight was forced to turn back to Newark Airport. The cause was a Bluetooth speaker with a four‑letter name. The device interfered with the aircraft’s navigation systems. Pilots initiated a return after detecting the anomaly. The incident added roughly four hours to the flight’s schedule. Passengers were kept on board while the issue was assessed. Airline officials said safety protocols required the precaution. Regulators will investigate the interference source.