What was found
DURING HEAVY CHECK MAINTENANCE, CORROSION WAS DISCOVERED ON L2 DOOR CUT OUT, FR AME 85 +2.5 INCHES, ADJACENT TO FWD SIDE OF GIRT BAR FITTING, O/B BOLT HOLE, SILL PLATE HAS CORROSION. BLENDED AREA IAW SRM 51-10-03. FOUND TO BE OUT OF LIMITS IAW SRM 53-23-11. INSTALLED NEW SILL BEAM, CENTER AND CORNER SEAL RESTS AND TWO GIRT BAR FITTINGS IAW SRM 51-43-01, 51-43-02, 51-43-03, 51-43-04 AND AMM 20-10-01. RESPECTIVELY. APPLIED TOUCH UP TO FASTENERS IAW SRM 51-23-05, 51-23-06. INSTALLED NUT PLATES IAW SRM 51-45-00.