Sounds like this are typically recorded by plane spotters and passengers near runways, then shared online as stock audio for aviation channels. Airbus aircraft are among the most flown airliners in the world, so their distinctive engine tone and landing gear sounds are instantly recognisable to frequent flyers. Clips of touchdowns spread through flight simulation communities, travel videos and social media, where the screech and rumble became a shorthand for a safe arrival. Editors keep reusing it because few effects convey scale, speed and relief as quickly.