Japan's Defense Ministry will fly an Osprey transport aircraft to Camp Kisarazu in Chiba Prefecture, near Tokyo, on Monday for temporary deployment by the Ground Self-Defense Force, or GSDF.

The Osprey is one of two that have been undergoing maintenance at US Marine Corps Air Station Iwakuni in Japan's western prefecture of Yamaguchi since its arrival in May. The other Osprey will fly to Camp Kisarazu on Friday.

Tokyo's local governments near the US Yokota Air Base are requesting that the US military's Osprey tilt-rotor aircraft be grounded until safety measures are taken.

Japan's Defense Ministry officials on Wednesday informed the Tokyo Metropolitan Government and local municipalities near the US base that part of an Osprey went missing after a flight on Tuesday.