As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CARRIED OUT AN NDT INSPECTION ON THREE SEPARATE MAIN GEAR BOX LOWER HOUSINGS, ALL THREE LOWER HOUSINGS WERE FOUND TO HAVE CRACKS IN SIMILAR LOCATIONS. CRACKS APPEAR TO ORIGINATE IN PRODUCTION RELIEF AREA ADJACENT TO STUD INSERT. BASED ON THE INSPECTORS EXPERIENCE THIS IS NOT A COMMON OCCURRENCE.