What was found
SCHEDULED INSPECTION AT AERO CORP, FL, FOUND AFT VENTRAL STAIRS LEFT OUTBOARD WEB HAS CORROSION ON UPPER SURFACE AFT END 70 INCHES FORWARD. ALSO, A WEB WITH FASTENER HOLES WITH NO EDGE DISTANCE AND ALL 7 HORIZONTAL INTERCOASTAL AND SHEAR CLIPS CORRODED. REMOVED AND REPLACED ALL INTERCOASTALS THAT WERE OUT OF LIMITS, TREATED ALL CORROSION AND INSTALLED ALL NEW MEMBERS IAW DC9 SRM 51-30-2, 52-01 FIG 1, AND AIRTRAN RES 982287.