What was found
IN REFERENCE TO NRC 437 WIP 6, (UT) MEASUREMENT THICKNESS WAS ACCOMPLISHED ON WEB SURFACE (DECK PLATE ) BTW STA 1681.8 AND LBL 25 AT W4, WITH ORIGINAL THICKNESS IS 0.071IN AND MINIMUM REMAINING THICKNESS IS 0.030IN THEREFORE IT'S OUT OF LIMITS PER B757-200 SRM 53-60-51-1A PROCEDURE 2 ALLOWABLE DAMAGE 2. PAR. 2. C. TABLE 101. DETAIL III. TABLE 102. CORRECTIVE ACTION: SUMMARY OF NRC 00689 , CORROSION LEVEL 2 ; DECK PLATE BTW STA 1681.8 AND LBL 25 AT W4 WAS REPAIRED PER B757-200 SRM 53-60-51- 2R REPAIR 2 ALTERNATIVE II. (1387762)