What was found
DEC 15. RH ENG VIB - DURING CLIMB THROUGHT FL 320 ECAM ADV N1 ENG VIBRATION AT 5.2 UNITS // CORRECTIVE ACTIONS: DEC 16. IN ACCORDANCE WITH AMM 71-00-00-700-848 LP COMPRESSOR ROTOR TRIM BALANCE WAS PERFORMED ON RH ENGINE ,5 TRIM BALANCE BOLTS WERE INSTALLED AT 102° IN ACCORDANCE WITH AMM 71-00-00-700-838 ENGINE VIBRATION SURVEY WAS PERFORMED. THE MAX VIBRATION SHOW WAS 1.0 OF N1 // APPROVAL FOR RETURN TO SERVICE UNDER CRSMU1Z335K CERTIFICATE