Landing Incident
During the landing, the pilot reported approaching at a speed he described as "a little faster" than preferred. During the flare, the airplane ballooned, bounced, and then began porpoising down the runway. The final bounce was characterized as "fairly hard." After the sequence, the pilot taxied off the runway without further incident.
Post-Flight Inspection
During a post-flight inspection, the pilot reported that "everything looked ok" with the airplane, but he observed fuel dripping from the underside of the fuselage.
Maintenance Findings
A maintenance inspection conducted one day after the landing event identified substantial damage to the firewall. The pilot reported no mechanical malfunctions or failures with the airplane that would have precluded normal operation.