What was found
L/H AND R/H WING FLAP TRACK SUPPORT #2, #3, AND #4 FWD ATTACHMENT TO WING FITTING SPRING WASHERS CORRODED. (C CHECK RO 03/07/2022) REMOVED AND REPLACED L/H AND R/H WING FLAP TRACK SUPPORT #2, #3, AND #4 FWD ATTACHMENT TO WING FITTING SPRING WASHERS. REF EMB 175 AMM 57-54-21 & 57-57-31