Abstract. This article discusses the basic principles of helicopter landing. All helicopters can perform both vertical landing and (if necessary) take-off landing (by plane). Helicopters with a drift landing gear, although they can (in principle) land at a certain horizontal speed, are not very well adapted to this and rarely use such a landing technique (namely, in cases of insufficient engine power for hovering, with a number of failures, etc.). Landing in this case is performed with the lowest possible translational speed.

Keywords: “H”, ROD, information system, civil aviation, transport, combined system, life cycle.