What was found
DURING TAKEOFF, FLT CREW NOTICED FLOCK OF BIRDS IN AREA OF FLIGHT PATH, SHORTLY AFTER CREW NOTICED NR 1 ENGINE HAVING EXCESIVE VIBRATION. BIRD INGESTED INTO NR 1 ENGINE. FLIGHT CREW ELECTED TO RETURN TO POINT OF DEPARTURE FOR REPAIRS. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. MX INSPECTED NR 1 ENGINE AND FOUND 1 FAN BLADE BENT AND CUT 6 INCHES FROM END OF BLADE. BIRD TRAVELED THROUGH BYPASS/SECONDARY STAGE OF ENGINE. FAN BLADE WAS REPLACED PER MM 72-31-02, BOROSCOPE INSPECTION IAW MM 72-00-00. NO DEFECTS NOTED. ENG RUN UP TEST ACCOMP, ALL IND NORMAL. A/C RETURNED TO SERVICE. (M)