The Okinawa prefectural government asked the U.S. Air Force on Wednesday to ensure safety measures for fighter jets after a component fell off an F-15 jet during a drill the previous day.
The U.S. Air Force has suspended drills involving the F-15s belonging to the Kadena Air Base since the incident.
After a meeting with a U.S. Air Force officer at the base, Tatsuo Oyakawa, a senior official in charge of military affairs with the prefectural government, told reporters, "I want (the U.S. military) to ensure maintenance (of the jets) and safety control to prevent recurrence of such an incident."
The prefectural government also asked the U.S. military not to resume the drills until measures to prevent a recurrence are taken.
The U.S. officer was quoted as telling Oyakawa that a panel to investigate the cause of the incident has been launched.
The fighter jet's cockpit canopy fell off during the drill in the East China Sea roughly 130 kilometers northwest of the main island of Okinawa on Tuesday morning. The plane made an emergency landing at the Kadena base.