What was found
MAIN CABIN FLOOR FRAME UPPER CAP SHOWS EVIDENCE OF POSSIBLE CORROSION BL0 TO BL20R BS 1020. REMOVED CORR ON FLOOR SUPPORT STA 1020 BLO TO BL20R IAW B757 SRM 51-10-02. FOUND TO BE OUT OF LIMITS DUE TO EXFOILATION IAW B757 SRM 53-00-51-1A FIG 101. REMOVED FLOOR SUPPORT IAW B757 SRM 51-40-02. FORMED, FABRICATED, LOCATED, DRILLED AND INSTALLED NEW SUPPORT IAW B757 SRM 51-40-05, 51-40-08, BOEING DWG 144N5005 REV - AND FEDEX EA F-5310-T0353723 P1 FUSELAGE - MAINFRAME - MAIN CARGO FLOOR SUPPORT STA 1020 CORRODED, NEW PART FABRICATION - TEMPER ALTERATION