Koepcke's unlikely survival has been the subject of much speculation. It is known that she was belted into her seat and thus somewhat shielded and cushioned, but it also has been theorized that the outer seats of the row—those on each side of Koepcke, which remained attached to hers as part of a row of three—functioned as a parachute and slowed her fall. The impact may have been lessened further by a thunderstorm updraft and the thick foliage at her landing site.