As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT C-CHECK, FUSELAGE BS 870 REAR UPPER CHORD CENTER TANK RBL 46 TO OUT. HEAVY CORROSION AND PRESSURE SEAL RETAINER IS ALSO CRACKED. FOUND SEAL RETAINER ATTACH ANGLE TO BE CORRODED BS 870 RBL46 AND CRACKED. REMOVED ATTACH ANGLE FROM RBL 40 TO RBL 63 APPROX, PER B727 SRM 51-10-2 NO CORRSION FOUND ON UPPER CHORD. INSTALLED NEW 2 PRESSURE SEAL RETAINER PER SRM 51-10-1. ALODINED AND PRIMED PER SRM 51-10-2.