On November 14, 2024, about 0704 Pacific standard time, a Cessna 172, N46028, was substantially damaged when it was involved in an accident near Van Nuys, California. The pilot and passenger did not sustain injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. According to the pilot, his preflight inspection and engine runup were normal, with minimal drop in RPM during the magneto check, carburetor heat application, and idle power check. After asking the tower controller for a left crosswind departure from runway 16R, the controller cleared him for takeoff. The pilot recalled that the takeoff roll, rotation and the initial climb were normal, and about 1,400 ft AGL, he completed the cruise checklist. Shortly after, the engine began to sputter and lost partial power. He contacted the tower controller, declared an emergency, pitched for best glide airspeed and attempted to return to the airport. The pilot turned on carburetor heat, verified the fuel selector was in the ‘both’ position, and performed a magneto check. Despite his attempts, he was unable to restore engine power and realized that he would not be able to make it to the airport. The pilot initiated a forced landing to an open area about 2 NM northeast of the departure end of runway 16R. During the landing roll on an uneven dirt surface, the airplane struck vegetation and nosed over. The airplane sustained substantial damage to the right wing lift strut, vertical stabilizer and rudder. The airplane has been retained for further examination.