DCA82AA027

While preparing for a flight to film a segment for a tv program about ultralights,the pilot completed a series of taxi tests & climbs to about 50FT AGL followed by an immediate landing. He had been previously instructed to use no more THAN3/4 power & never fly beyond vne of 55MPH. He then commenced a takeoff & steep climb at full power & proceeded to make some turns,climbs & descents from about 500-1000FT. The ultralight then entered a full power descent & began a pitch oscillation followed immediately by the failure of the left wing. In reviewing a video tape,it appeared that the pilot lost his footing on the nose wheel steering bar & was tossed forward during the pitch oscillation. The pilot was lifted up out of his seat during the oscillation. Both wings folded & the pilot fell clear of the ultralight. The pilot did nothave his seat harness fastened. No pilot certificate had ever been issued to the pilot. Federal regulations do not require a pilot of an ultralight to receive training or possess an aeronautical rating in this category of aircraft.