  Decays of $\chi_{c0,2}\ar\ww$ are observed for the first time using a sample
of $14.0\times 10^6$ $\psi(2S)$ events collected with the BESII detector. The
branching ratios are determined to be ${\cal B}(\chi_{c0}\ar \ww)=(2.29\pm
0.58\pm 0.41)\times 10^{-3}$ and ${\cal B}(\chi_{c2}\ar\ww)=(1.77\pm 0.47\pm
0.36)\times 10^{-3}$, where the first errors are statistical and the second
systematic. The significances of the two signals are $4.4\sigma$ and
$4.7\sigma$, respectively.
