On October 12, 1997, about 1700 eastern daylight time, a Grumman Schweizer Aircraft Corporation G-164A, N4983, collided with power lines during an aerial application swath run near Sylvania, Georgia. The airplane was operated under the provisions of Title 14 CFR Part 137, and visual flight rules. Visual meteorological conditions prevailed. A flight plan was not filed for the aerial application flight. The commercial pilot was not injured, and the airplane was substantially damaged. The flight originated at 1645 hours from a private strip in Sylvania, Georgia. According to the pilot, he was flying on a westerly magnetic heading, into the sun, and did not see the power lines prior to the collision. No mechanical problems with the airplane were reported by the pilot. The inspector stated that the airplane was substantially damaged by impact, then destroyed by post impact fire.