What was found
MAIN PASSENGER CABIN STA 380 RBL 20 FLOORBEAM HAS CORROSION. REMOVED CORROSION IAW B727 SRM 51-10-6 FOUND OUT OF LIMITS. REMOVED FLOORBOARD TO GAIN ACCESS. REMOVED UPPER CHORD FROM STA 380 BL 0 TO RBL 33. MAT ID FOR UPPER CHORD BAC 1505-10061 PO 33-41778 IAW B727 SRM 53-10-2 FIG 7 SH 2. CUT AND TRIMMED UPPER CHORD, DRILL, DEBURRED, MATERIAL. FABRICATED -2 SUPPORT ANGLE AN 2 REINFORCEMENT STRAPS IAW B727 SRM 53-10-8. ALODINED AND PRIMED ALL MATERIAL IAW B727 51-10-2. INSTALLED ALL NEW MATERIAL IAW B727 SRM 53-10-8 PG 19.