As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN GEAR BOX (SN A6167) WAS INSTALLED ON AIRCRAFT AND REQUIRED REMOVAL DUE TO A POSSIBLE CRACK FOUND ON THE UPPER HOUSING ON THE RT SIDE. HOUSING APPEARED TO BE SEEPING OIL FROM SUSPECTED CRACK IN THE ARMPIT OF THE UPPER HOUSING. THE SUSPECT AREA WAS LOCALLY BLENDED. ETCHED AND FPI WAS ACCOMPLISHED. CRACK WAS FOUND IN THE RT ARMPIT AND APPEARED TO BE APPROX 2 INCHES LONG. PROBABLE CAUSE IS FATIGUE AT THE WELD IN THE CASTING.