Los Castillo Airport

The closure was due to economic reasons, specifically the conversion of the land for agricultural use. The expansion of intensive farming in the Ascensión municipality made the land more valuable for cultivation than for aviation. The encroachment of center-pivot irrigation systems onto the airport's footprint made flight operations unsafe and ultimately impossible, indicating a deliberate change in land use from aviation to agriculture.

The site is no longer an airport and the land has been fully repurposed for agriculture. While the faint outline of the north-south runway is still visible from the air, it is unmaintained, eroded, and directly bordered by large, circular agricultural fields. The land is actively farmed, and any infrastructure that may have existed, such as a windsock or small hangar, is either gone or in a state of severe disrepair and likely used for farm storage. The ICAO identifier MX-1772 is now purely a historical record.

Los Castillo Airport was a small, private dirt airstrip. Its significance was purely local. It served the needs of general aviation and, most critically, the agricultural industry in the region. Operations would have primarily consisted of:
1. **Agricultural Aviation:** Supporting crop dusting and spraying for the vast farmlands in the surrounding valley.
2. **Private Transport:** Used by local ranchers, landowners, and business operators for quick transportation to and from this relatively remote area.
The name 'Los Castillo' strongly suggests it was a private field owned or operated by a specific family or business entity, a common practice for ranching and agricultural airfields in northern Mexico. It did not handle any scheduled commercial passenger or cargo flights.

There are no plans or prospects for reopening the airport. The permanent conversion of the land to high-yield agriculture, including the installation of costly irrigation infrastructure, makes a return to aviation use economically and logistically unfeasible. The land's value is now tied to its agricultural output, effectively ensuring the closure is permanent.