What was found
DISCREPANCY: WHILE AT C-CHECK AT COMMERCIAL JET IN KDHN A FLOOR BEAM UPPER ANGLE WAS FOUND CORRODED IN MULTIPLE PLACES IN THE AFT CABIN @ F.S. 1338 RBL 24- RBL 44 CORRECTIVE ACTION: COMMERCIAL JET IN KDHN REMOVED CORROSION FROM THE FLOOR BEAM UPPER ANGLE AT F.S. 1338 AND FOUND AREAS TO BE OUT OF LIMITS IAW MD80 SRM 53-01.. THEY REMOVED THE FLOOR BEAM UPPER ANGLE AND FABRICATED A NEW ANGLE FROM 7075-T6511 EXTRUSION. THE NEW ANGLE WAS DRILLED AND DEBURRED IAW MD80 SRM 51-10-4, THE ANGLE WAS TREATED AND PRIMED IAW MD80 SRM 51-10-3. NEW ANGLE WAS INSTALLED AT F.S. 1338 IAW MD80 SRM 51-30-5