The soalr activity is known to influence the cosmic-ray flux on earth up to energies of 50 GeV per nucleon. The AMS-01 detector, which was flown on board the NASA Space Shuttle "Discovery" in June 1998, is sensitive to the highest energy range of solar particle events. Systematic flux fluctuations for the main cosmic-ray components (protons, helium nuclei and electrons) have been searched in the energy range accessible to the AMS-01 detector (from 100 Mev per nucleon to 200 GeV per nucleon) for the time interval for which suitable AMS-01 data are available (from June 8 to June 12, 1998). Systematic variations of cosmic-ray flux have been observed in the energy range below the geomagnetic cutoff. The comparison to the geomagnetic activity of the time has shown a correlation between systematic flux decreases and magnetic distrurbances of solar origin.