What was found
SUPPORT TASK- MAIN CABIN STA 1640-1660 BL0 FLOOR SUPPORT HAS COR ROSION ON UPPER SURFACE. TRANSCRIBED FROM HAECO GSO NRC 9282478 REMOVED CORROSION ON INTERCOSTAL FLOOR SUPPORT AT STA IAW B757-200 SRM 51-40-02 AND BAC DWG 146N5269-1 REV- 1640-STA 1660 BL-O. FOUND TO BE OUT OF LIMITS IAW B757-200 SRM 5 LOCATED AND DRILL HOLES IAW DWG 146N5269 AND B757-200 SRM 51-40- 3-00-51 BAC DWG 146N5269 REV TOOL NO T8224L. REMOVED AND 05 HAECO GSO MECH V935255 INSP QC467 REPLACED WITH NEW INTERCOSTAL FLOOR SUPPORT P/N 146N5269-1