Entrada Mayer Airport (ICAO: SCEY) is a small, remote airstrip located in the Aysén Region of southern Chile, near the Argentine border. It serves the sparsely populated area around the Río Mayer basin, providing air access to an otherwise extremely isolated region of Chilean Patagonia. The airport has no scheduled commercial airline service and primarily supports light general aviation aircraft, charter flights, and logistical operations for ranches, estancias, and occasional expeditions in the area. Ground infrastructure is minimal, consistent with its remote frontier nature. Given its location in one of the least populated regions of South America, the airstrip plays a practical role in connecting isolated communities and estates to larger regional centers such as Cochrane or Coyhaique.