A British Airways flight from Heathrow to Washington DC saw water flood the cabin as the crew frantically tried to solve the issue.
Water cascaded through the ceiling of the Airbus A380 during flight BA292 at 30,000 feet while crew members grabbed towels and blankets in an attempt to stem the flow of water but with little success.
The Sun reported that a startled crew member surveying the inflight scene exclaimed: “No f****** way.”
The stairs toward the front of the plane leading from the first cabin up to Club World seats were drenched.
Some nervous passengers were concerned that the water would damage the avionics wiring around the electrics.
People on board the flight used rugs in an attempt to prevent the water from seeping through the plane, but despite efforts from the crew, water continued to stream from a clean water tank.
By the end of the 12-hour flight, hundreds of litres of water was washing around the plane.
British Airways said that no diversion was necessary because safety was not compromised, The Sun reported.
The airline also said the jet was fixed by engineers on touchdown and later resumed service.
This is the first time one of British Airway’s A380 jets has sprung a leak mid-flight.
An airline worker told The Sun: “This was not a flight for nervous flyers. An inflight waterfall is not a regular feature at BA.
“It looked more British Waterways that British Airways.
“Crew gave thanks the leak happened towards the end of the transatlantic crossing.
“There were a few people saying their Hail Mary’s, but staff were professional throughout.”
A British Airways spokesperson said a faulty valve on the internal clean water supply was fixed when the plane landed in the US.
“While there was no safety issue at any point, the area was quickly isolated and the flight continued as planned.”