What was found
MAIN CABIN FLOORBEAM, STA 947.5 HAS CORROSION AROUND 3 EA FASTENER H0LES, LBL 10 TO RBL 10. ACFT GROUNDED. REMOVED CORROSION AND CHECKED LIMITS IN 3 EA AREAS. ORIGINAL THICKNESS IN 3 EA AREAS IS .180. REMAINING THICKNESS AT RBL 4 IS .125, .035 WAS REMOVED. REMAINING THICKNESS AT LBL 4 IS .148, .032 WAS REMOVED. REMAINING THICKNESS AT LBL 12 IS .159, .021 WAS REMOVED. RBL 4 AND LBL 4 FOUND TO BE OUT OF LIMITS AND LBL 12 IS FOUND TO BE WITHIN LIMITS. REPAIRED RBL 4 AND LBL 4, REF 700 53-70-51-2R-6, REPAIR 6 ALLOWABLE LIMITS REF SRM 53-70-51-1A-1 ALODINED AND PRIMED REF SRM 51-20-01, PAINTED AND IDENTIFIED AREA REF AMM 51-05-01 DOT REMOVED.