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 THE L1 DOOR HAS MAIN SHAFT STOP ADJUSTMENT NUTS CORRODED (2 EA). MX REMOVED AND REPLACED L1 DOOR MAIN SHAFT STOP ADJUSTMENT NUTS IAW EMB 170/175 AMM 20-10-01 P/N NAS428-4AG, AN316-4R, NAS1149C0432R. A/C REMAINS IN CMH FOR HEAVY CHECK COMPLETION.