As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED ON POST FLIGHT FOUND TAR ON FAN BLADES OF NR 1 ENGINE. MAINTENANCE PERFORMED INSPECTION FOR FOD ON THE NR 1 ENGINE FAN BLADES, FAN BYPASS VANES. FOUND TAR RESIDUE PASSED CLEAR OF INTERNAL SURFACES. CLEANED FAN BLADES AND FAN BYPASS VANES. PERFORMED BOROSCOPE INSPECTION OF THE COMPRESSOR SECTION IAW REFERENCE AE3007 MM 72-30-00-200-801, UP TO AND INCLUDING INLET GUIDE VANES. FOUND NO EVIDENCE OF FOD INGESTION. AIRCRAFT RETURNED TO SERVICE.