Reply To: PHOTO: Orthodox Jewish Man Covers Himself In Plastic Bag On Plane

HaLeiVi: Rav Schachter quotes that the airplane is Chotztetz because it’s not Mekabel Tumah because the metals they are made out of are lightweight alloys and aren’t any of the 6 metals mentioned in the Torah (which the Gra says are the only ones that can be Mekabel Tumah).