Rancho Calvillo Airstrip

The specific reason is not officially documented, which is common for small, private airstrips. However, the most probable cause is abandonment by the private owner. This is typically due to economic reasons, such as the high cost of maintenance, a change in the owner's operational needs, or the sale of the ranch property. There is no evidence to suggest closure was due to a major accident, regulatory action, or military conversion.

The site is completely abandoned as an airfield. The unpaved runway is no longer maintained, is heavily overgrown with vegetation, and is crossed by numerous vehicle tracks. It has effectively reverted to being part of the surrounding ranch land and is unusable for any aviation purposes. The land continues to be part of the private ranch property.

Rancho Calvillo Airstrip was a private-use airfield. Its significance was purely logistical, serving the needs of the 'Rancho Calvillo' ranch on which it was located. Operations would have been limited to general aviation, likely involving light, single-engine aircraft. Its purpose was to transport personnel, guests, or high-priority supplies to and from the remote ranch, bypassing slower ground transportation. It did not handle commercial, scheduled, or public flights.

There are no known or published plans to reopen the Rancho Calvillo Airstrip. Reinstating the airfield would require significant private investment to clear, grade, and potentially re-certify the runway with Mexican aviation authorities (AFAC). Given its remote location and private nature, reopening is considered highly unlikely unless a future owner of the property has a specific and compelling need for a private airstrip.