As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE CONTINUES TO HAVE GREATER THAN EXPECTED VIBRATION LEVELS AFTER LAST FAN LUBE AND ON BOARD FAN TRIM BALANCE. ACFT GROUNDED. ACCOMPLISHED STEP 1 OF TSR. REPLACED 1 PLATFORM. PERFORMED NR 2 ENGINE VIBRATION SURVEY TEST 7 & ON-BOARD FAN TRIM BALANCE TEST 14B IAW AMM 71-00-00-700-814-F00, AND 71-00-00-750-808-F00. PEAK VIBRATION OF 0.4 UNITS IS WITHIN PUBLISHED LIMITS IAW MM 71-00-00-800-806-F00.