On June 26, 1996, about 0730 Alaska daylight time, a Hughes 369D helicopter, N5125Q, received damage to the tail rotor and other components while preparing to depart a remote area about 30 miles northwest of Ketchikan, Alaska. The helicopter was being operated as a visual flight rules (VFR) cross-country government flight under Title 14 CFR Part 91 when the accident occurred. The helicopter, registered to Temsco Helicopters Inc., Ketchikan, Alaska, and operated by the U.S. Forest Service, sustained substantial damage. The certificated commercial pilot, the sole occupant, was not injured. Visual meteorological conditions prevailed. VFR company flight following procedures were in effect. The flight originated at the Ketchikan International airport, about 0710. A representative of Temsco Helicopters reported that the pilot had landed in the area of Magnetic Point, adjacent to Union Bay located on the Cleveland Peninsula in the Tongass National Forest. The flight was conducted under contract with the U.S. Forest Service. Three forest service employees departed the helicopter and began walking away. While at full operating RPM, the helicopter rocked backwards and the tail rotor struck a rock. The helicopter received damage to the tail rotor blades, gearbox, tail boom and drive shaft.