As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT INNER GEAR DOOR ACTUATOR WOULD NOT OPEN DUE TO INTERNAL MALFUNCTION RESULTING IN NOT LETTING THE LEFT GEAR LEAVE THE GEAR WELL. THE AIRCRAFT MADE A GEAR UP LANDING. THE ACTUATOR IS AN OZONE P/N 2924-3, PIPER P/N 455-946. THE ACTUATOR WAS INSTALLED 12-95 AND HAD 3086 HOURS SINCE INSTALLED.