What was found
BACK OF NR 3 SLAT, LT WING, HAS A 2 INCH CRACK & 9 POPPED RIVETS 20 INCHES INBD OF SLAT STATION X0S 380. COMPLIED WITH SRM 551-10-5B INSTALLED 9 EACH CR3214-4-2 CMAX RIVETS RC11636. ACCOMPLISHED DVI & FPI IAW NDTSRM, 2" CRACK VERIFIED TERMINATES AT FASTENER. REPETITIVE INSPECTION REQUIRED EVERY SERVICE CHECK, WITHIN 50 FLIGHT HOURS, PERMANENT REPAIR REQUIRED. COMPLIED WITH EA 20-2015-080 M360 SUBMITTED, ASSIGNED DAMAGE ID 140. R & R RIGGED LT NR 3 SLAT IAW AMM 27-80-01. OPERATIONS CHECKED GOOD.