Yokohama Airfield

The closure was primarily due to economic factors. As a small, private airfield, its viability likely declined with the wane of local general aviation activities and agricultural aviation (crop dusting), which were its main functions. The rising costs of operation and maintenance for such a small facility would have made it unsustainable.

The site of the former airfield has been completely redeveloped and is now occupied by a large-scale solar power plant, known as the 'Tosa Yokohama Solar Power Plant'. Satellite imagery clearly shows the land, which retains the long, narrow shape of a runway, covered entirely by rows of solar panels. The original aviation infrastructure has been removed.

Yokohama Airfield was a small, private airfield, officially classified as a 'Jōgai Rikuriku-jō' (場外離着陸場), which translates to an 'off-airport landing and takeoff site'. It was not a public airport with scheduled services. Its primary operations included:
- **General Aviation:** It served as the home base for the local 'Yokohama Flying Club'.
- **Agricultural Aviation:** The airfield was used by aircraft for agricultural purposes, such as crop dusting over the surrounding farmland in Kōchi Prefecture.
Its significance was purely local, supporting a small community of private pilots and the regional agricultural industry.

There are no plans or prospects for reopening Yokohama Airfield. The land has been permanently repurposed for renewable energy generation with the construction of the solar farm, making a return to aviation use virtually impossible.