A United Airlines flight from Newark Liberty International Airport to Spain’s Canary Islands returned to its departure airport on 30 May 2026 after the crew received a threatening message transmitted via Bluetooth by an unidentified passenger device.
The flight crew was alerted to a security threat message indicating that a bomb was supposedly placed in the aircraft’s hold. The message, which included a grossly worded bomb reference, was identified as coming through a Bluetooth connection rather than any aircraft system. The crew repeatedly instructed passengers to switch off Bluetooth on their personal devices while attempting to identify the source of the transmission.
In response to the perceived threat, the captain elected to discontinue the transatlantic sector and turn back to Newark, where the aircraft landed with emergency services deployed on the ground. Subsequent inspections did not locate any explosive device, and authorities have not confirmed that the event constituted an actual attempted attack or hijacking.
Some reports indicate that the aircraft’s transponder may have been set to code 7500 during the return, a setting reserved in international procedures for suspected unlawful interference, although this detail has not been formally confirmed by the airline or air traffic control. The event underlines how non-traditional, passenger-operated communication channels such as Bluetooth are now triggering full-scale security responses, reinforcing the operational need for clear procedures when anonymous digital threats arise in flight.