  We consider the model of Dirac fermions coupled to gravity as proposed in
\cite{VolovikBH}, in which superluminal velocities of particles are admitted.
In this model an extra term is added to the conventional Hamiltonian that
originates from Planck physics. Due to this term a closed Fermi surface is
formed in equilibrium inside the black hole. In this paper we propose the
covariant formulation of this model and analyse its classical limit. We
consider the dynamics of gravitational collapse. It appears that the Einstein
equations admit a solution identical to that of the ordinary general
relativity. Next, we consider motion of particles in the presence of the black
hole. Numerical solutions of the equations of motion are found which
demonstrate that the particles are able to escape from the black hole.
