What was found
DURING C4/S1 CHECK, INSPECTION REPORTED FRETTING ON C-16 CROSSBEAM, DOOR ACCESS 812 (LT AVIONICS DOOR). REMOVED BOLT. FOUND WEAR ON THE BUSHING. CLEANED AREA IAW A319111 SRM 51-42-11, DRAWING D53913231. REASSEMBLED WITH NEW BUSHING IAW A319111 AMM 20-21-11-991-003.