What was found
ON FEBRUARY 10, 2023 THIS AGB WAS RECEIVED BY STS MAINTENANCE ORGANIZATION (EASA FR.145.0229) FOR AN OVERHAUL (NOT RELATED TO THIS EVENT) FROM CUSTOMER ROLLS-ROYCE NORTH AMERICA. THIS AGB WAS NEVER SERVICED BY STS BEFORE. DURING DISASSEMBLY, IT WAS OBSERVED THAT THE AGB HAD A "LINE 12 GEARSHAFT" P/N:39745400 S/N:EA030849 (ORIGINALLY MOUNTED ON AGB "BR715" S/N:1345) THE BEARING P/N:39744000 OUTER RING AND INNER RING S/N ARE DIFFERENT OUTER RING S/N:EB185916 (SAME AS PRODUCTION S/N) INNER RING: S/N:EB205603 (ORIGINALLY MOUNTED ON THE AGB "BR715" S/N:1345).