Source: Simon Hradecky | www.avherald.com

A British Airways Boeing 777-300, registration G-STBB performing flight BA-179 from London Heathrow,EN (UK) to New York JFK,NY (USA), was enroute at FL340 about 90nm north of Shannon (Ireland) when the crew declared PAN PAN reporting they suspected a fire on board in the aft cabin. The crew decided to divert to Shannon and dump fuel while heading direct towards to Shannon’s approach fix for the ILS runway 24. The aircraft entered a hold at FL060 to complete dumping fuel and continued for a safe landing on runway 24 about 35 minutes after leaving FL340. Emergency services checked the aircraft, but found no trace of fire, heat or smoke. The aircraft taxied to the apron.

Passengers reported an acrid burning odour developed in the aft cabin, it was believed a galley oven in the aft galley emitted the odour and smoke, cabin crew disconnected electrical power from the galleys. They were taken to hotels and rebooked onto other flights.

The occurrence aircraft remained on the ground for about 5 hours, then positioned to London Gatwick,EN (UK).