Context
October 22, 2022. About 22:30. Azul flight 4517 was flying from São Paulo/Guarulhos to Porto Alegre, high over Santa Catarina. The pilot reported a very strong light, like an aircraft's landing light, pointing towards the plane. Its movement followed no traffic circuit. He called it "movimento aleatório". Random movement. The light, he said, "aparece e some, aparece e some, várias vezes". It appears and disappears, again and again. Controllers had no matching traffic on radar.