A Delta Airlines flight travelling from Barcelona, Spain, to Boston in the United States was forced to make an emergency landing in Portugal on Sunday after smoke was detected inside the aircraft cabin.
The aircraft, carrying 296 passengers, was diverted to Porto Airport in northern Portugal, where emergency responders were placed on alert ahead of its arrival.
According to Portugal’s civil protection service, the plane landed safely and 14 passengers required medical attention after disembarking. Four of them were taken to hospital for treatment after experiencing mild smoke inhalation.
Officials said those hospitalised were only lightly affected and no serious injuries were reported.
Authorities have yet to determine the cause of the cabin smoke, while investigations are expected to be conducted by aviation safety agencies and the airline.
The incident nevertheless caused significant disruption to the transatlantic flight and raised concerns among passengers onboard.
Emergency landings triggered by smoke or fumes in aircraft cabins are treated as high-priority situations because of the potential risk of fire or the rapid spread of toxic substances. Standard aviation procedures require flight crews to declare an emergency and divert to the nearest suitable airport whenever such conditions are detected.
The swift response by the flight crew and Portuguese emergency services helped ensure the safety of passengers and crew members, preventing the situation from escalating into a more serious incident.
Delta Airlines has not yet released detailed information on the source of the smoke, but aviation experts say maintenance inspections will likely focus on electrical systems, air-conditioning equipment and other onboard components capable of producing fumes.
The airline is expected to make alternative travel arrangements for affected passengers while investigations continue.
