Narusawa Airfield

Primarily economic reasons. As a small, private airfield catering to recreational flying, it likely faced financial unsustainability, a common issue for such specialized facilities, particularly following the burst of Japan's economic bubble in the early 1990s. There is no evidence of closure due to a major accident or military conversion.

The site is permanently closed and no longer used for aviation. While the faint outline of the ~800-meter runway is still visible in satellite imagery, it is completely overgrown with grass and vegetation. A large portion of the former airfield's land has been redeveloped and is now occupied by the Narusawa Solar Power Plant (鳴沢太陽光発電所), a large-scale solar energy farm.

Narusawa Airfield was a private, unpaved (grass/dirt) airfield that served the general aviation community. Its primary function was as a base for recreational flying, with a notable focus on gliding. The airfield's most significant feature was its spectacular location at the northern foot of Mount Fuji, providing pilots and glider enthusiasts with unparalleled scenic views. It was a cherished local hub for the flying community during its operational years.

Zero. There are no known plans or prospects for reopening the airfield. The combination of its long-term closure (over 30 years) and the significant redevelopment of the land for industrial energy production makes any return to aviation activities logistically and economically infeasible.