As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A CONTROLLED APPROACH WHEN THE LANDING GEAR WAS SELECTED DOWN THE GEAR UNSAFE LIGHT ILLUMINATED AND LANDING GEAR FAILED TO EXTEND. THE GEAR HANDLE WAS PLACED BACK IN THE RETRACTED POSITION AND THE GEAR UNSAFE LIGHT STAYED ILLUMINATED. THE PILOT COMPLIED WITH EMERGENCY EXTENSION PROCEDURES WITH RESULTS OF RIGHT MAIN, LEFT MAIN, AND NOSE GEAR DOWN AND LOCKED GREEN LIGHT ILLUMINATED. AIRCRAFT LANDED WITHOUT INCIDENT.