The number of instances of airplane noise recorded rapidly increased in the municipalities of Higashi, Ginoza, and Kin in fiscal 2017 compared to when the Okinawa Defense Bureau began conducting aircraft noise surveys in the northern part of the main island of Okinawa in fiscal 2014, a source close to the matter revealed on June 27. At Ushimichi in the Takae district of Higashi , for example, 5,840 instances of airplane noise were recorded in fiscal 2017, nearly a fourfold increase from fiscal 2014, when 1,474 instances were recorded. The number of late-night and early-morning instances of noise jumped around seven-fold to 1,344 in fiscal 2017 from 194 in fiscal 2014.
The provisional data for fiscal 2017 on the aircraft noise survey conducted by the Okinawa prefectural government also shows that the number of noise instances around Kadena Air Base jumped and the number of late-night airplane noise is also rising in areas around Marine Corps Air Station Futenma. This indicates that noise pollution caused by U.S. military aircraft is increasing across the prefecture. (Abridged)