As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ACCOMPLISHMENT OF CPCP TASK C57-306-04 PART 1 OF 2, CORROSIOIN WAS FOUND ON THE LET WING OUTBOARD FLAP, INBOARD FLAP CARRIAGE SPINDLE. REMOVED AND REPLACED FLAP CARRIAGE SPINDLE PER BOEING MM 27-51-81 AND RIGGED SYSTEM PER BOEING MM 27-51-12 A/T