It is the first time to study the mierophysical conditions acsoeiated wilh aircral icing in PRC. The flights were made in winter stratiform and straiocumuls clouas-Icing data of adout 5-6 hours was obtained during 1988-1987 winter season. In th paper horizontal and vrtical variations of LWG. VMD and droplet, spectra in oac flight arc disenssed. Khrgian-Mazin form doe, not fit well with the spectra because of their bimodal .