  We study the X-ray emission of the microquasar XTE J1550-564 and analyze the
properties of its light curves using the recurrence analysis method. The
indicators for non-linear dynamics of the accretion flow are found in the very
high state and soft state of this source. The significance of deterministic
variability depends on the energy band. We discuss the non-linear dynamics of
the accretion flow in the context of the disc-corona geometry and propagating
oscillations in the accretion flow.
