What was found
AT ROTATION NR 2 ENG VIB ANNUNICATOR LIGHT & ENG VIB LIGHT FOR NR 2 ENG ILLUM, ACCOMPANIED BY VIB & ABNORMAL SOUND. NR 2 ENG SECURED IAW CHECKLIST, NO VIB NOTED AFTER SHUTDOWN. FUEL JETTISON, ACFT RETURNED WITHOUT FURTHER INCIDENTS. ON POSTFLIGHT INSPECTION FOUND EVIDENCE OF A BIRDSTRIKE ON NR 2 ENGINE. ACCOMPLISH INSPECTION IAW AMM 5-51-14, & AMM 71-00-47. BORESCOPE INSPECTION OF IPC, HPC & COMBUSTION SECTION COMPLETED, & FOUND ACCEPTABLE. DAMAGE TO NR 11, & NR 12 FAN ROTOR BLADES NOTED. CLEANED LP COMPRESSOR CASE & VANES OF BIRD RESIDUE, & REPLACED FULL SET OF ROTOR BLADES IAW AMM 72-31-04. ACCOMPLISH RUN UP TEST & TO POWER ENGINE RUN IAW MM. FINAL INSPECTION, LEAK CHECKS SATISFACTORY, ACFT RTS.