  Three flavoured neutrino oscillations are investigated in the light of the
Leggett-Garg inequality. The outline of an experimental proposal is suggested
whereby the findings of this investigation may be verified. The results
obtained are: (a) The maximum violation of the Leggett Garg Inequality (LGI) is
$2.17036$ for neutrino path length $L_{1}=140.15 $ Km and $\Delta L=1255.7 $
Km.(b) Presence of the mixing angle $\theta_{13}$ enhances the maximum
violation of LGI by $4.6\%$.(c) The currently known mass hierarchy parameter
$\alpha = 0.0305$ increases the the maximum violation of LGI by $3.7\%$.
(d)Presence of CP violating phase parameter enhances the maximum violation of
LGI by $0.24\%$, thus providing an \textit{alternative indicator of CP
violation} in 3-flavoured neutrino oscillations.
