  We investigate the role of gap states in processes of perturbation
transmission along finite superconducting Kitaev chain. We look at this problem
on the general ground and use the formalism of non-stationary Greens functions,
which contain full information about the non-equilibrium and non stationary
properties of the system. We discuss tunneling current and non-stationary
transport properties of a finite Kitaev chain with each edge connected to its
own external lead. It is shown that the tunneling current is always
exponentially small for long chains. The time dependent behavior of the
tunneling current after the sudden change of bias voltage in one of the leads
is also obtained. We investigate the characteristic time of charge transfer
from the state at one end of the chain to the opposite edge state. We obtain
that this time always exponentially increases with the growth of the chain
length, and the relaxation time to the new equilibrium occupation number for
the localized state is very large. Our calculations are completely analytical
and straightforward, in contrast with many other methods. Obtained results show
how quickly the "second half" of Majorana state responds after external
perturbation acts on the "first half" and why "Majorana" states can hardly be
used for any practical devices that require signal transmission from one end of
the system to the other.
