As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE A/C WAS IN FOR HEAVY CHECK FOUND LEVEL 2 CORROSION ON FWD CARGO DOOR SEAL REST ON FWD AND AFT LOWER POSITIONS CORRODED. MX REMOVED AND REPLACED FWD AND AFT LWR CARGO DOOR SEAL REST IAW EMB 170 SRM 51-40-00, 51-40-02. P/N 170-66803-402, 170-66803-402. A/C REMAINS IN CMH FOR HEAVY CHECK COMPLETION.