  We analyze weak decays of triply heavy baryon $\Omega_{ccc}^{++}$ and
calculate the form factors for $\Omega_{ccc}^{++}\to
\Xi_{cc}^{++}/\Omega_{cc}^+$ transitions in a light front quark model. The
momentum distributions in form factors are accessed via the pole-model
parametrization. Using the results for form factors, we predict decay branching
fractions for semi-leptonic decays, and obtain
$\mathcal{B}(\Omega_{ccc}^{++}\to\Xi_{cc}^+e^+\nu_e)=0.08\%$,
$\mathcal{B}(\Omega_{ccc}^{++}\to\Omega_{cc}^+e^+\nu_e)=1.23\%$.
Forward-backward asymmetry and angular distributions are then investigated in
this work. We also estimate branching fractions for a few color-allowed
processes and find that the $\Omega_{ccc}^{++}\to\Omega_{cc}^+\pi^+$ has a
sizable branching fraction:
$\mathcal{B}(\Omega_{ccc}^{++}\to\Omega_{cc}^+\pi^+)=1.82\%$. We point out that
the $\Omega_{ccc}^{++}\to\Omega_{cc}^+\pi^+$ is a golden channel for the
discovery of the $\Omega_{ccc}^{++}$. This analysis can provide a useful
reference for future experimental search in future.
