  We report results on the broad scale anisotropy of cosmic ray arrival
directions in the energy rage from $2 \times 10^{17} eV$ to $10^{20} eV$. The
data was taken by the Fly's Eye detector in both monocular and stereo modes of
operation. We look for dependence on galactic latitude or supergalactic
latitude by fitting the data to a Wdowczyk and Wolfendale plane enhancement
function and a N-S gradient functional form. We report a small but
statistically significant galactic plane enhancement in the energy range
between $2\times 10^{17}eV$ and $3.2 \times 10^{18} eV$. The probability that
this anisotropy is due to fluctuations of an isotropic distribution is less
than 0.06%. The most significant galactic plane enhancement factor $f_{E} =
0.104 \pm 0.036$ is in the energy range $0.4-1.0 \times 10^{18} eV$. No
statistically significant evidence for a N-S gradient is found. There is no
sign of significant deviation from isotropic background when the data is
analyzed in terms of supergalactic latitude distributions
