We have performed the reduced-gravity experiments on fluid and thermal phenomena by airplane since 996. They were concerned with -subcooled boiling of wate, thermocapillary flow in liquid film- and -natural ocnvection. Through these reduced-gravity experiments, we obtained some informations that were expected to be very useful for the next experiments. In this article, some notes are presented for the design and the manufacturing of experimental system and the working in the hangar. Then, the brief information on airplane operations is introduced for the pleasure of flight experiments.