Niragawa Airfield

Military Defeat and Industrial Repurposing. The airfield ceased all aviation operations following the surrender of Japan at the end of World War II. As a key facility in Japan's military-industrial complex, it was decommissioned during the subsequent Allied occupation. The land was later repurposed for civilian heavy industry.

The site of the former airfield has been completely redeveloped. It is now occupied by the massive Nissan Motor Co., Ltd. Tochigi Plant (日産自動車栃木工場), which opened in 1968. The original runways, hangars, and other aviation infrastructure have been entirely removed and replaced by factory buildings, parking lots, and a large, high-speed vehicle test track for Nissan's automotive development and testing. No remnants of the original airfield are visible.

The facility, historically known as Koizumi Airfield (小泉飛行場), was a critically important private airfield for the Nakajima Aircraft Company during WWII. It was located adjacent to Nakajima's Koizumi Plant. The airfield was used for test flights and the delivery of newly manufactured military aircraft for the Imperial Japanese Army Air Force. It played a significant role in the production of several key aircraft, most notably the Nakajima Ki-84 'Hayate' (Allied reporting name: 'Frank'), one of the most advanced Japanese fighters of the war. The airfield and its associated factory were a primary target for Allied bombing raids in the final year of the war. The ICAO code JP-0880 is a modern, unofficial identifier used in some databases to mark the historical location; it was not its operational code.

None. The location is a vital and active manufacturing hub for Nissan, producing high-end vehicles like the Nissan GT-R and various Infiniti models. There are no plans, discussions, or any conceivable prospects for the site to be converted back into an airfield.