DL59 - Incident: Delta A339 near London on Oct 5th 2025

A Delta Airlines Airbus A330-900, registration N411DX performing flight DL-59 from London Heathrow,EN (UK) to Boston,MA (USA) with 259 people on board, was enroute at FL360 about to enter Oceanic Airspace when the crew decided to turn back to London Heathrow reporting smoke in the cockpit. The aircraft landed safely back on Heathrow's runway 27L about 90 minutes after departure.

The airline reported the aircraft returned due to smoke on board.

The flight was cancelled.

The aircraft remained on the ground in London for about 22 hours, then positioned to Boston.