What was found
AFT PIT FLOOR PANEL 140EF IS CORRODED ALONG THE OUTER EDGES OF UPPER SURFACE. / EVALUATED CORROSION DAMAGE ON UPPER SURFACE OUTER EDGES OF AFT PIT FLOOR PANEL 140EF TOTAL ACCUMULATED DAMAGE LENGTH GREATER THAN THE 20' MAXIMUM ALLOWED - OUT OF LIMITS IAW SRM 53-00-53-1A-1; FABRICATED NEW FLOOR PANEL 140EF IAW AMM 25-52-01-201-801 AND BOEING DWG 453A2610 REV C; TREATED AND PRIMED IAW AMM 51-21-41-370-802 AND AMM 51-21-72-370-804 ATAG A76421