What was found
CRACK FOUND AT LW #4 SLAT SKIN AT ACTUATOR FITTING ATTACHMENT 3RD 0/B AFT RIVET. CRACK LENGTH 0.0394' AT 1 O'CLOCK POSITION. ; CRACK FOUND AT LW #4 SLAT SKIN AT ACTUATOR FITTING ATTACHMENT 3RD 0B AFT RIVET. CRACK LENGTH 0.0394' AT 1 O'CLOCK POSITION. REMOVED ACCESS PANELS 522CB; 522DB AND 522EB AT SLAT #4 FOR ACCESS IAW AMM 27-81-41-000-801. INSTALLED REPAIR PARTS IAW SRM 57-42-01-2R-8 & SRM 51-40-02-0G-0. APPLIED FILLET SEAL AT REPAIR DOUBLER IAW AMM 51-31-00-390-804. INSTALLED FLEX SKIN AND ACCESS PANELS IAW SRM 51-40-02-0G-0.