Established 1953, Nakanihon Air Service is a general aviation company headquartered at the Nagoya/Komaki Airport, in Toyoyama, Nishikasugai District, Aichi Prefecture.
Operates helicopters on behalf of the Ministry of Land, Infrastructure, Transport and Tourism and various Prefectures around Japan for Emergency Surveillance and Fire Fighting Disaster Recovery missions. Nakanihon also operates helicopters for regular emergency medical services (EMS), and electronic news gathering.
NNK has been a Bell Helicopter authorised Customer Service Facility since 1994 and customizes many of the Bell helicopters entering Japan. Nakanihon is also an Airbus-approved maintenance centre for EC135/H135 helicopters.
As of 2020, Nakanihon fleet includes 45 Eurocopter/Airbus helicopters.