  The gravitational chiral quantum anomaly is calculated in the framework of
the extended Rarita-Schwinger-Adler (RSA) field theory, which includes the
interaction with an additional spin 1/2 field. It is shown that the factor in
the gravitational chiral anomaly, normalized to the Dirac field anomaly, is
equal to -19. The resulting value distinguishes the RSA theory from the other
theories of spin 3/2. A direct verification of the conformality of the RSA
theory in the strong interaction limit at the level of one-loop three-point
graphs was made.
