On July 2, 1993, at about 1210 central daylight time, a Gulfstream G164B, N8163K, collided with terrain after a collision with power lines near Selmer, Tennessee. The private pilot was fatally injured, while the aircraft was destroyed. The aircraft was operated by the pilot. The flight was conducted under 14 CFR Part 137. Visual meteorological conditions prevailed at the time, and no flight plan was filed for the local, aerial application flight. The flight originated in Corinth, Mississippi at an undetermined time. An inspector from the Federal Aviation Administration reported that the aircraft crashed in a cultivated farm field. There was a broken high tension power line about 600 feet from the main wreckage. The power lines consisted of a set of four cables, erected about 200 feet above the ground. The cable closest to the ground was found broken. Braided wire imprint markings were observed on the leading edge of the upper, right wing. An examination of the aircraft did not reveal evidence of a mechanical malfunction or failure. The aircraft maintenance logbooks were not recovered following the accident. An examination of the pilot's airman records revealed that his agricultural operator certificate had been revoked by an Emergency Order of Revocation, dated August 23, 1989. At the time of the accident, the pilot did not possess a commercial airman certificate. The order cites numerous Federal Aviation Regulation violations by the pilot. A copy of the Emergency Order of Revocation is included as an attachment to this report. Subsequent to the emergency revocation, the pilot acquired a second class medical certificate on February 3, 1992. The pilot's medical records included documentation of a history of hypertension since 1987, and that as of August 13, 1992, the pilot was taking Prinzide (25 mg daily) for hypertension. An autopsy and toxicological examination was not performed due to the wishes of the pilot's family members.