As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT IS IN FOR A C-CHECK WHEN CORROSION WAS FOUND ON THE RT SILL FROM FRAME 44 TO FRAME 49. MX BLENDED THE CORROSION BEYOND THE LIMITS, THEY R & R THE SILL, RESTORED THE SURFACE PROTECTION IAW SRM 51-20-03 AND 51-40-02 AND CPM 51-21-06.