As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: INITIAL INSPECTION (CPCP FINDING) CORROSION OVER 21LH STRINGER LOCATED BTW FR79/85LH IN AFT CARGO COMPARTMENT; (RESOLVED ON W/O: 1267464 TASKCARD: NR-00085) REF. TOMX WO# 2452 - N/R 000354 - R&R 21LH STRINGER LOCATED BTW FR79/85LH IN AFT CARGO COMPARTMENT PER EMB-190 SRM 51-43-03 AND SRM 51-41-02.