As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHED T/C 78472010 ON #1 ENG S/N #963356 FOUND CHIPPED CU-NI-IN COATING BEYOND LIMITS OF AREA X. BLADE #8 S/N DM045062-L. GROUNDED - YES. REMOVED & REPLACED #1 ENGINE 8 / 20 FAN BLADE PAIR IN CONJUNCTION WITH TASK CARD 78472010 REFERENCE B737-900 AMM 72-21-02-000-802-F00. PERFORMED VIBRATION SURVEY TEST 7 IAW AMM 71-00-00-700-814-F00. GROUND VERIFICATION REPAIR CONFIRMATION SUCCESSFUL PEAK VIBE OF .9 UNITS AT 95% N1 IS WITHIN LIMITS PER AMM 71-00-00-800-806-F00.