On March 27, 1997, about 1023 eastern standard time, a Cessna 172M, N5123H, registered to Sun Flight International, Inc., was substantially damaged on landing at the Pompano Beach Airpark, Pompano Beach, Florida. Visual meteorological conditions prevailed at the time and no flight plan was filed for the 14 CFR Part 61 instructional flight. The student pilot, the sole occupant, was not injured. The flight originated about 5 minutes earlier from the Pompano Beach Airpark. According to the operator of the airplane, the flight was the student's second supervised solo flight and after touchdown for the third and final landing, the airplane started to porpoise. The student did not apply power to go around and the airplane came to rest on the edge of the runway. Damage to the firewall and rear spar of the left wing was noted.