As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE N1 VIBE UP TO 5.0 DURING CLMB OUT ENG1 SN. 900496 (TSI= 20319 HRS / 2557 C). REL L/P 4765754, METAL FOUND IN TAIL PIPE, REQUIRES ENGINE REPLACEMENT. BEGINNING #1 ENGINE CHANGE PREPERATION PER AMM 71-00-02-000-802-G00. ENGINE CHANGE PREPERATION PER AMM. 71-00-02-000-802-G00 C/W UP AND TO INCLUDING STEP G10 CONTINUED ENGINE REMOVAL PREPARATION PER AMM 71-00-02-000-802-G00 UP TO AND INCLUDING STEP G(15)