As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI OUT RT TURNS CAUSED A BANGING NOISE AND CAUSED TILLER TO JUMP. REMOVED LT AND RT NLG WHEEL ASSYS. INSPECTED BEARINGS AND AXLES NO TROUBLE FOUND. INSTALLED WHEEL ASSYS PER AMM SPACERS INSTALLED. TAXIED ACFT MAKING SEVERAL LT AND RT TURNS, NO BANGING FOUND. TILLER OPERATES SMOOTH. ETOPS CATEGORY 'E': PROBLEMS WITH SYSTEMS CRITICAL TO ETOPS.