As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EVIDENCE OF LIGHT SURFACE CORROSION ON LT BUTE DOOR ACTUATOR "SPRING", AT LT OUTBOARD FLAP (INBOARD) HINGE BOX LOCATION, FLAGGED. C-CHECK RO 12/04/2020. REMOVED CORRODED "SPRING" AND INSTALLED NEW BUTE DOOR ACTUATOR SPRING P/N: 600-10246-1 AT LT OUTBOARD FLAP INBOARD HINGE BOX (WHERE FLAGGED), REF CRJ700 AMM. OPERATIONS TEST GOOD.