What was found
DURING M-CHECK FOUND MAIN CABIN AFT DECK PLATE UPPER SURFACE CORRODED. STA 1680-1720, BL 0-RBL 54. REMOVED CORROSION IAW SRM 53-00-51, PG 103, DETAIL III. ORIGINAL THICKNESS .071 IAW SRM 53-60-51, PG 7. MAIN CABIN AFT DECK PLATE UPPER SURFACE FOUND TO BE WITHIN LIMITS, EXCEPT STA 1712 TO 1715, BETWEEN RBL 22 TO RBL 50. AREA FOUND OUT LIMITS IAW SRM 53-00-51, PG 101. TREATED AND PRIMED AREAS WITHIN LIMITS, CUT OUT DAMAGED AREA ON STA 1712 TO 1715, BETWEEN RBL 22 TO RBL 50 IAW SRM 53-60-51, FIG 201, REPAIR 2, PGS 201 TO 205, FABRICATED FILLER AND DOUBLER, TREATED AND PRIMED, IN REF TO SRM 53-60-51, PG 201, REPAIR 2, PGS 201 TO 205, AND SRM 51-20-01, PGS 3, INSTALLED DOUBLER AND FILLER ON MAIN CABIN AFT DECK PLATE UPPER SURFACE STA 1710 TO 1718, BETWEEN RBL 17.5 TO RBL53 IAW SRM 53-60-51, FIG 201, REPAIR 2, PGS 201 TO 205.