  In this paper we obtain a new solution of Einstein field equations which
describes a boosted Kerr-Newman black hole relative to a Lorentz frame at
future null infinity. To simplify our analysis we consider a particular
configuration in which the boost is aligned with the black hole angular
momentum. The boosted Kerr-Newman black hole is obtained considering the
complete asymptotic Lorentz transformations of Robinson-Trautman coordinates to
Bondi-Sachs, including the perturbation term of the boosted Robinson-Trautman
metric. To verify that the final form of the metric is indeed a solution of
Einstein field equations, we evaluate the corresponding energy-momentum tensor
the boosted Kerr-Newman solution. To this end, we consider the electromagnetic
energy-momentum tensor built with the Kerr boosted metric together with its
timelike killing vector. We show that the Papapetrou field thus obtained
engender an energy-momentum tensor which satisfies Einstein field equations up
to 4th order for the Kerr-Newman metric. To proceed, we examine the causal
structure of the boosted Kerr-Newman black hole in Bondi-Sachs coordinates as
in a preferred timelike foliation. We show that the ultimate effect of a
nonvanishing charge is to shrink the overall size of the event horizon and
ergosphere areas when compared to the neutral boosted Kerr black holes.
Considering the preferred timelike foliation we obtain the electromagnetic
fields for a proper nonrotating frame of reference. We show that while the
electric field displays a pure radial behaviour, the magnetic counterpart
develops an involved structure with two intense lobes of the magnetic field
observed in the direction opposite to the boost.
