After dropping the parachutist, the acft was observed to fly eastward over the dz, make a left 180 turn, line up on the parked van on an easterly heading and descend to a low altiude. Witnesses estimated the altitude at from 10 t0 30 ft agl. The van was parked on a ridge across the flt path. The acft made a low alt-high speed run toward the van. Just before striking the van with the ldg gear, the acft seemed to duck under a low power line in its path.
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