On November 19, 1998, at 1245 central standard time, an Air Tractor AT-400A agricultural airplane, N23787, struck the terrain following a loss of engine power while maneuvering near Bunkie, Louisiana. The airplane was owned and operated by Davis Flying Service, Seminole, Texas. The non-instrument rated commercial pilot, sole occupant of the airplane, was not injured. The airplane sustained substantial damage. Visual meteorological conditions prevailed for the local aerial application flight and a flight plan was not filed. The Title 14 CFR Part 137 flight originated from the Bunkie Municipal Airport at 1115. The operator reported that while spraying a cotton field, at 20 feet agl, a total loss of engine power occurred. During the ensuing forced landing, structural damage occurred to the airplane's wings, fuselage, and landing gear. On the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2), the 3,890 hour pilot stated that he banked the airplane to avoid power lines and a wooded area during the forced landing. The airplane struck the ground in about a 45 degree nose low attitude. The FAA inspector, responding to the site, reported that chemical spillage and fuel leakage hampered an examination of the aircraft. The reason for the engine power loss was not determined.