As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON R2 DOOR SILL AT FR66. REMOVED CORROSION ON R2 DOOR SILL AT FR66 FOUND TO BE OUT OF LIMITS IAW SRM 53-41-14-283-002 FIG 001 SHT 01. REMOVED AND REPLACED DOOR SILL IAW SRM 51-42-11 AND 51-72-11.