As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION ON FWD SEAL REST APPROX FR 77 IN AFT CARGO COMPARTMENT;(REF TOMX W/O 1556 NR #00158) CORROSION ON FWD SEAL REST APPROX FR 77 WAS REMOVED AND FOUND OUT OF LIMITS THEREFORE FWD SEAL REST WAS REPLACED IAW EMB 190 SRMI 53-23-29. FIGURE 20.