In the course of the plane flight the onboard intellectual systems of tactical level (BIS-TU) operatively are solving the problem of the appointing of the current goal of the flight and the problem of the designing of the way of achievement of this goal. The problem of the appointing of the current goal of the flight is solved by intellectual information system "Situational awareness of crew" (IIS SAoC) and onboard operatively advising expert system "Operative goal-setting" (BOSES goal-setting). The problem of the appointing of the current goal of the flight is solving by the intellectual information system "Situational awareness of crew" (IIS SAoC) and the onboard operatively advising expert system "Goal-setting" (BOSES goal-setting). Among the found out the potential threats the IIS SAoC allocates the direct threats (D-Threat). The priority D-Threat is transferred (as the collision "The current stage of the flight — the arisen D-Threat) in BOSES goal-setting which recommends the current purpose of the flight for the crew. If the crew accepts this recommendation the corresponding onboard operatively advising expert system "The designing of a way of achievement of this goal of flight" (the BOSES TS "The appointed goal of the flight ") joins. It is designing the way and is recommending it to the crew for the realisation. If the appointed goal has been worked in the flight task the advance prepared way will be recommend. The work of the BIS-TU in the flight conditions of the passenger plane TU-124 which in August 1963 has been compelled to land on the river Neva in the centre of Leningrad is illustrated. Conditionally the plane is having equipped by the BIS-TU and by the measuring systems which necessary for their work. We will describe the role and the result of the work of the BIS-TU in the collisions which have arisen in the flight.
