As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TPA - FLT 1818 - EN ROUTE MIA-LAX, FIFTEEN MINUTES INTO FLIGHT DETECTED NR 1 SIDE ENGINE VIBRATION. RETURNED THROTTLE TO IDLE. ACCOMPLISHED ENGINE VIBRATION CHECKLIST. ENGINE CONTINUED TO VIBRATE. PROCEEDED TO SHUT NR 1 ENGINE DOWN PER THE CHECKLIST. DIVERTED TPA AND LANDED WITHOUT FURTHER INCIDENT. REPLACED NR 1 ENGINE. (M)