[The psychophysiological assessment of the functional status of a pilot under different conditions of piloting].

Variations in the cardiac activity and is attention concentration indices of a pilot have been investigated during manual flight under various conditions. It is shown that the cardiac rhythm rate and variability as well as the level of concentration reflect variations in the functional state of a pilot caused by varying working conditions and may be used to optimize the flight duty day routine, manual flying duration, in-flight work and rest time table as well as to assess the flying omission complexity.