The parabolic flight supplies microgravity environment in a cabin and assures of carrying out various microgravity experiments. The first parabolic flight in Japan was done in 1986 by Mitsubishi MU-300, small jet plane, and up to now 2000 parabolic flights have been carried out by MU-300 in total. In this paper, method and feature of parabolic flight by MU-300 are reported. Diamond Air Service Co. located near Nagoya airport offers parabolic flight and its support for a microgravity experiment. The parabolic flight by MU-300 provides microgravity periods of approximately 20 seconds with below 3x 10-2 G condition. 6 - 10 times of parabolic flight have been done per 1 flight depending on preparation time of each experiment. Various G conditions between 0.03G and 2.5G can be provided in excess of 20 seconds. Typically, two experimental themes are flown simultaneously, and one of those operators can be on board. NASDA developed support-equipment for MU-300 microgravity experiment such as electric power supply, data recorder, data logger and video system. These equipments are able to make remote-operation at system operator's seat.
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