Aerodromo de Sao Cosmado

The closure was not due to a single event like an accident or military conversion, but rather a gradual cessation of operations for economic and operational reasons. The primary purpose of the strip was to support agricultural aviation. The decline or termination of these crop-dusting services, combined with the costs of maintenance and a general lack of use, led to its eventual abandonment.

The site of the former aerodrome has been fully reclaimed for agricultural use. Satellite imagery confirms that the land where the runway was located is now covered by vineyards, blending in with the surrounding landscape. The faint outline of the former runway is still barely discernible from the air, but there are no remaining signs of aviation infrastructure or activity on the ground.

The Aerodromo de Sao Cosmado was a private grass airstrip of local importance. Its primary historical role was supporting the agricultural economy of the Douro Demarcated Region, a UNESCO World Heritage site famous for Port wine. The airfield served as a base for crop-dusting aircraft that treated the region's extensive and often hard-to-reach vineyards. In addition to its agricultural function, it also supported some local general aviation, including recreational and ultralight (ULM) flights. It never handled commercial or military traffic and had minimal infrastructure, consisting of little more than the 600-meter grass runway.

There are no known official plans, proposals, or prospects for reopening the Aerodromo de Sao Cosmado. The land has been fully converted back to high-value agricultural use (vineyards). Re-establishing an airfield would require significant private or public investment to reacquire the land and rebuild the runway, for which there is no apparent economic or strategic justification.