The alert was triggered by bright lights in the sky that moved erratically.
According to Inexplicata, between 22:50 and 23:10, four flights reported the presence of strange lights in the sky to the Air Traffic Control center.
🇧🇷 | Por 5° noche consecutiva, hay múltiples informes de extrañas luces en el cielo de Porto Alegre, Brasil. Más pilotos de aviones reportaron la aparición de estos ovnis. pic.twitter.com/P41IqEbKxb
— Mundo en Conflicto 🌎 (@MundoEConflicto) November 9, 2022
The flights in question were 4248, 3140, 4407, of Azul Air, and LATAM flight 3406. Pilots noticed that the lights went on and off, but did not constitute a hindrance to air traffic.
The moment was recorded by the Salgado Filho Airport Control Center.