As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGLISH VERSION AFTER THE MLG RETRACTION, THE "GEAR UP" LIGHT DID NOT LIGHT. THE ACFT RETURN TO LAND. DURING INSP, THE "DOWN LOCK" HOOK REMAINED WEDGED. THE GEAR CYLINDER WAS VERIFIED AND THE SETTING ADJUSTMENT WAS NOT ACCORDING TO THE MFG. THE SYS WAS REGULATED AND ADJUSTED ACCORDING TO THE MANUAL AND LUBRICATED. SEVERAL RETRACTIONS HAVE BEEN CARRIED OUT AFTERWARD WITHOUT ANY PROBLEM. THE ACFT WAS BACK ON SERVICE.