On April 21, 1994, at 1045 central daylight time, a Gulfstream AM G-164B, N8402K, was substantially damaged during a forced landing near Delaplaine, Arkansas. The commercial pilot sustained minor injuries. Visual meteorological conditions prevailed throughout the area for the aerial application flight. During an interview with the pilot, conducted by a Federal Aviation Administration inspector, he reported that he was in his initial climb following takeoff when he lost engine power. He further reported that there was insufficient altitude for him to effectively perform the forced landing. According to the enclosed pilot report, altitude at the time of the loss of power was 60 feet and the airplane "hit hard." An examination of the aircraft and accident scene revealed that the airplane cart wheeled resulting in damage to the wings and fuselage. An inspection of the airplane by a FAA airworthiness inspector did not reveal the reason for the loss of engine power and the operator has been unable to determine why it happened. The aircraft was released to the owner.