As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE TREND DATA SHOWS LOW PRESSURE ROTOR VIBRATION LEVELS TO BE TRENDING HIGHER THAT NORMAL. ACFT GROUNDED. ENTERED WEIGHT SOLUTION ONTO REAR SPINNER IAW MM 71-00-75-808. ENTERED WT. LOCATION INTO AAVM. LOC. 29 & 34 REMOVED P12'S INSTSALLED P09'S AT LOC. 29 & 3. LOC 34 NOW P07.