>>519088574
found a similar source too >>519086680

>https://www.alamy.com/interior-view-of-the-cabin-with-the-ballast-water-tanks-of-the-airbus-a380-during-a-visit-inside-the-test-aircraft-used-for-demonstration-flights-at-the-49th-paris-air-show-at-le-bourget-airport-east-of-paris-saturday-june-25-2011-ap-photofrancois-mori-image523493428.html

Interior view of the cabin with the ballast water tanks of the Airbus A380 during a visit inside the test aircraft used for demonstration flights at the 49th Paris Air Show at Le Bourget airport, east of Paris, Saturday June 25, 2011. (AP Photo/Francois Mori)

also

>https://www.alamy.com/stock-photo-dpa-the-prototype-of-the-airbus-a380-is-filled-with-water-tanks-to-53881758.html

The prototype of the Airbus A380 is filled with water tanks to simulate the weight of passengers and their luggage at the Airbus assembly plant in Toulouse, France, Thursday, 21 April 2005. After successfull driving tests on ground, the new Super-Airbus A380 is now being prepared for the first test flight.