As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND LT DOWNLOCK MECHANISM WOULD NOT RETRACT BECAUSE OF EXCESSIVE GREASE. CLEANED EXCESSIVE GREASE FROM DOWNLOCK MECHANISM PISTON AND PERFORM LANDING GEAR OPERATIONAL CHECKS. LANDING GEAR FULLY CYCLED UP AND DOWN EIGHT TIMES - MX PERFORMED IAW CMM 32-11-01. MX OPS CHECKS WERE GOOD. ACFT RETURNED TO SERVICE.