As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING THE ALF CHECK, IT WAS NOTICED THAT THE OIL LEVEL IN T/R GEAR BOX WAS TOO LOW, AND THE FIN WAS COVERED IN OIL. THE INPUT MAG SEAL WAS REPLACED AT 3105.4 HRS. THE ACFT FLEW FOR 3.4 HRS AND NO DEFECT WAS REPORTED. THE DAY AFTER THE ACFT FLEW FOR 1.7 HRS AND THIS IS WHEN THE DEFECT WAS REPORTED. THE T/R GEAR BOX WILL BE REMOVED AND SENT TO MFG FOR INVESTIGATIONS.