As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON POST FLIGHT INSPECTION, FOUND NR 1, 2, 3 AND 4 ENGINES HAD EVIDENCE OF C-1 BLADE DAMAGE. REMOVED ALL DAMAGED C-1 (N1) BLADES AND INSTALLED MATCHED SET OF C-1 BLADES ON ALL 4 ENGINES IAW B747 MM 72-32-02/72-31-01 AND ACCOMPLISHED FOD DAMAGE INSPECTION AND FOUND NO DEFECTS IAW B747 MM 72-00-00. (M)