As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*** WHILE AIRCRAFT WAS IN FOR HEAVY CHECK *** MAINTENANCE REPORTED LEVEL 2 CORROSION AT THE R2 DOOR LOWER SILL BEAM NUTPLATE BRACKET. MAINTENANCE REMOVED & REPLACED THE R2 DOOR LOWER SILL BEAM NUTPLATE BRACKET IAW E170 SRM 51-10-03, 51-75-16 & 51-40-02 AND REPUBLIC EO 170EO-53-15-0003. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.