What was found
CORRODED INTERCOSTAL AT STR 20RT BETWEEN FRAMES BS 310-319.70. UPON FURTHER EVALUATION SEVERE CORROSION WAS DISCOVERED AND IS OUT OF LIMITS IAW SRM 55-21-23-101-002-A01, PART REPLACEMENT REQUIRED. REMOVED INTERCOSTAL ON STR 20R BETWEEN FS 310.00 AND 319.00 REF: SRM 51-42-06-001-001-A01, 51-42-21-001-001-A01. DRILLED UP AND INSTALLED NEW INTERCOSTAL ON STR 20R BETWEEN FS 310.00 & FS 319.00 REF SRM 51-40-11-001-001-A01 51-42-06-001-001-A01 AND 51-42-21-001-001-A01 DWG SH670-31630, REV.