What was found
OPERATOR OF A 747-8 REPORTED THAT WHILE INSPECTING THE CROWN SKIN, STRINGERS, AND FRAME FOR CORROSION INHIBITING COMPOUND (CIC) AND FOREIGN OBJECT DEBRIS (FOD), MULTIPLE TRANSVERSE STRINGER CRACKS WERE FOUND COMMON TO S-1L, S-3L, S-5L, S-12L, AND S-12R BETWEEN STA 820 AND STA 860. NOTE: BOEING HAS DOCUMENTED THIS FAILURE ON COSP 2025-2047. NOTE: DISCREPANT STRINGER PART NUMBERS ARE 142U7741-51, 142U7741-57, 142U7741-63, 142U7742-51, AND 142U7742-51. NOTE: THIS IS A NON FLIGHT DISCOVERY. AIRCRAFT HAS BEEN UNDERGOING MAJOR ALTERATION/MODIFICATION AT BOEING SAN ANTONIO PART 145 REPAIR STATION SINCE 2019.