LAX83FU010

After takeoff, the plt of the ultralight vehicle climbed to an altitude of 700 ft AGL in the pattern & turned downwind. According to the plt's partner, the ultralight began a dutch roll type of maneuver, and after several oscillations, the vehicle stalled & entered a spin to the left. Four other witnesses also observed parts of the sequence of events. According to them, the vehicle's wings began rocking on downwind, then it entered a spin. An exam of the wreckage revealed no preimpact part failure or malfunction. The plt had aprx 40 hrs of fixed wing flt training about 9 yrs previously. According to the chief plt for mitchell acft, the plt had completed a 1 week ground school course & had 5.3 hrs of dual instruction in a 2 place version of the ultralight. On his 1st solo flt, the plt did not perform satisfactorily, due to a panic reaction & was advised not to fly solo until after additional dual instruction.