Source: https://www.bruitparif.fr/pages/Thematiques/700%20Bruit%20du%20trafic%20a%C3%A9rien/600%20Les%20politiques%20de%20gestion%20du%20bruit%20du%20trafic%20a%C3%A9rien/660%20Plan%20de%20g%C3%AAne%20sonore%20(PGS)%20et%20aide%20%C3%A0%20l