What was found
ON CLIMB OUT OF SJU #2 ENG FAN VIB CLIMB TO 4.3 DECREASED AT LEVEL OFF CRUISE ALT NO VIBS FELT(<P>PER POWERPLANT ENGINEER, READINGS FROM ENG BIB MONITOR SEEM TO BE ERRONEOUS AND INCONSISTANT. UNIT TO BE REPLACED ON LONGER GROUND TIME PER ACTION PLAN. TRANSFERRED #2 ENG VIB MONITOR UNIT TO MDDR # 148709 IAW MEL 77-31-01, CAT C, DUE 27 JUN21.</P> / <P>18JUN21 - LP 1341791 - M2 - MEM - PERFORMED OPS CHECK VIBRATION MONITOR UNIT IAW B767 AMM 77-31-05. OPS CHECK GOOD. THIS CLEARS MDDR 148709, PLAC REMOVED. MCC NOTIFIED.</P>)