What was found
DURING TRANSIT CHECK, IT WAS DETECTED THREE DENTS ON SLAT NUMBER 1 SKIN. MAINTENANCE PERSONNEL PERFORMED A REVISION, DETECTING 3 DENTS ON SLAT 1 WITH MULTIPLE DAMAGES ON LE FRONTAL AREA LOCALIZED BETWEEN STA 1151.75 AND STA 1160; A DENT AT STA 1152.75 WITH 1.750" LENGTH, 0.500" WIDTH AND 0.019" DEPTH; A DENT AT STA 1156.25 WITH 4.00" LENGTH, 0.500" WIDTH AND 0.012" DEPTH; A DENT AT STA 1159.5 WITH 0.750" LENGTH, 0.500" WIDTH AND 0.008" DEPTH; HFEC AND BOND TEST INSPECTIONS AT DAMAGE AREAS WERE PERFORMED IAW B787 NDTM PART 6, 51-00-01 AND NDTM PART 4, 51-00-01; A ULTRASONIC INSPECTION WAS PERFORMED IAW B787 NDTM PART 4, 57-40-01; MESSAGES BOEING NUMBERS AMX-AMX-21-0489-02B AND AMX-AMX-21-0489-04C; SLAT NUMBER 1 WAS REPLACED IAW AMM DMC-B787-A-27-81-03-00B-520A-A/720A-A, TESTED CORRECT.