A Delta Air Lines Airbus A330neo, operating flight DL59 from London Heathrow to Boston, was forced to return to London on October 5, 2025, after the flight crew reported fumes in the cockpit shortly after takeoff. The aircraft declared an emergency while flying near Cornwall and safely landed back at Heathrow, where emergency response teams were on standby. All passengers disembarked safely, and Delta confirmed the incident is under investigation, emphasizing that safety remains the airline’s top priority. Maintenance crews are inspecting the aircraft’s air and APU systems to determine the cause of the fumes.
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