What was found
MCI - DURING OP 16 MAINTENANCE CHECK, FOUND IN CABIN DYE CHECK SHOWING 2 EACH CACKS IN LOWER FLANGE OF LONGERON 16R, AT STA 965 FORMER FRAME. REMOVED CRACKED SECTION OF L16R AND FITTED AND INSTALLED NEW SECTION OF LONGERON PER SRM 53-02, FIG 18. ACFT T: 77,783 HOURS. ACFT TC: 84,471. (X)