As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD PIT, REMOVED SOFT SEALANT BTW BS 720C - 720D BTW STR 28L - STR 28R EVIDENCE OF CORROSION. REMOVED CORROSION ON SKIN IAW B727 SRM 51-10-6. ORIGINAL MAT. 0.072", REMAINING MAT. 0.054", MAT. LOSS 0.018". FOUND TO BE WITHIN LIMITS IAW EA 7-5330-136797.