Mitsubishi MU-300 Diamond crash, Jul 23, 1986 (4 killed)
Mitsubishi MU-300 Diamond accident on July 23, 1986 near Mt Kinpoku (Sado Island), Chūbu, Japan with 4 fatalities.
- Date: July 23, 1986
- Aircraft: Mitsubishi MU-300 Diamond
- Location: Mt Kinpoku (Sado Island), Chūbu, Japan
- Fatalities: 4
Mitsubishi MU-300 Diamond owned by Yomiuri Shimbun was destroyed when it struck Mount Kinpoku on Sado Island, Japan, on 23 July 1986; four were killed.