As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT NOTICED HYDRAULIC FLUID ON THE RIGHT HAND MAIN LANDING GEAR AUXILIARY RETRACTION CYLINDER SHAFT. UPON DISASSEMBLY OF THE RETRACT CYLINDER THE SHAFT O-RING HAD A SMALL TEAR IN IT. AFTER O-RINGS AND BACKUP RINGS WERE REPLACED THE AIRCRAFT WAS PUT ON JACKS, GEAR RETRACTIONS AND EMERGENCY EXTENSION CHECKS WERE ACCOMPLISHED WITH OPERATIONS FOUND TO NORMAL AND NO LEAKS WERE NOTED.