What was found
AT C-CHECK, AFT AIR STAIR LOWER AFT END SKID PAD SUPPORT CASTING HEAVILY CORRODED. REMOVED CASTING, CUT OUT DAMAGED STRINGER, INSTALLED STRINGER REPAIR PER SRM 53-10-3, 10 INCHES LONG. INSTALLED NEW AFT AIRSTAIR SKID PAD SUPPORT CASTING PER SRM 51-10-1.