What was found
DURING A SCHEDULED INSPECTION AT AERO CORP, CORROSION FOUND IN THE AFT CARGO PIT, S29R FROM STA 870 - STA 897. S29R WAS NOT CORRODED, INTERCOSTAL ON TOP WAS CORRODED AND CRACKED. REMOVED CORROSION, CORROSION WAS OUT OF LIMITS IAW DC9 SRM 53-01 FIG 1, SRM 51-10-3. RECEIVED NEW INTERCOSTAL. DRILLED, DEBURRED, AND INSTALLED INTERCOSTAL IAW DC9 SRM'S 51-30-5, 51-30-2, 51-20-3, 51-10-4.