As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE B-CHECK INSPECTION, FOUND EVIDENCE OF CORROSION ON AFT SIDE OF STA 870 BULKHEAD APPROX RBL50. REMOVED CORROSION IAW B727 SRM 51-10-6. FOUND OUT OF LIMITS IAW B727 SRM 51-10-1. INSTALLED DOUBLER REPAIR IAW SKETCH AIA/E/2635 DTD 9/9/97. NON-ROUTINE TASK CARD NUMBER 002035.