What was found
AFT CABIN UTILITY AREA FLOORBEAM AT FR66, Y254 UPPER FLANGE HAS CORROSION. REMOVED CORROSION IAW SRM 51-74-00. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-14, REMOVED FLOORBEAM IAW SRM 51-42-11. INSTALLED NEW FLOORBEAM IAW SRM 51-42-11 AND TRM 53-21-01.