| 1977 |
Nippon Airport Radio Services Co., Ltd. was founded with 50% ownership ratio of Nippon Telegraph and Telephone Public Corporation and Kokusai Denshin Denwa Co., Ltd. respectively. Started operations of radio communication systems in Narita International Airport. |
| 1979 |
Opened Osaka office |
| 1980 |
Opened Naha Office |
| 1990 |
Started a service by MCA system "Terrestrial Trunked Radio Service" in Narita International Airport |
| 1994 |
Closed Osaka office due to opening of Kansai International Airport |
| 1999 |
Started a service by MCA system in Naha Airport |
| 2000 |
Became a 100% subsidiary of Nippon Telegraph and Telephone Corporation and Type1 telecommunication carrier |
| 2005 |
Started Air to Ground (A/G) radio communication services in Chubu International Airport |
| 2005 |
Replaced analogue MCA system by digitalized system in Narita International Airport |
| 2007 |
Replaced analogue MCA system by digitalized system in Naha Airport |
| 2010 |
Started Air to Ground radio communication services in Haneda Airport |
| 2016 |
Replaced MCA system by TETRA based MCA system in Narita International Airport |
| 2017 |
Replaced MCA system by TETRA based MCA system in Naha Airport |
| 2019 |
Started Air to Ground radio communication services in Shimojishima Airport |
| 2019 |
Took over MCA business in Chubu International Airport and started service with TETRA based system |
| 2022 |
Took over MCA business in Kansai International Airport and started service with TETRA based system |
