As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUPPLEMENTAL INFORMATION: ***CORROSION*** ON AFT SERVICE DOOR MOP SILL FROM B.S. 867-986. / CORROSION EVALUATION WAS FOUND TO BE OUT OF LIMITS; LOCATED AND DRILLED NEW MOPSILL AT AFT SERVICE DOOR AREA. MOP SILL TO BE INSTALLED ON CARD #T707244. 86750U 15NOV17