A British Airways Airbus A380-800, registration G-XLEF performing flight BA-56 (dep Mar 12th) from Johannesburg (South Africa) to London Heathrow,EN (UK), was enroute at FL400 about 90 minutes prior to estimated landing , when a water leak occurred in the upper passenger deck flooding the floor at the upper deck quickly causing the water to also drop down into the lower deck. Cabin crew were able to contain the leak about 15 minutes later and began to dry up the water in the cabins with towels and blankets all over the floors. The flight was continued to London for a safe landing.
The occurrence aircraft remained on the ground for about 64 hours before resuming service.
Passengers reported that about 90 minutes prior to landing in Heathrow a huge water leak occurred in the upper deck flooding the floor with water of about 1cm depth for about 15 minutes. The electrical systems in the cabin were turned off, the water soon came through the ceiling and the air conditioning into the lower deck. About 15 minutes later the captain made an announcement stating that a water leak had occurred, however, it was safe to continue to London.
The Aviation Herald