Some news I found on it there's videos on the net too.
According to Asagiri, the fighter was delivered to the JASDF in 2004 and is undergoing its first maintenance in 3 years of service.
The engine was from another F-2 jet and had about 1,000 hours. The aircraft itself has 740 hours.
The sortie was supposed to be a touch and go followed by a flight out to the Sea of Japan.
Test pilot Nagata Keiji suffered serious injuries and co-pilot Mizushima Mitsuo was lightly wounded.