As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT ROLLS LT WHEN YOU SELECT FLAPS 45. FLT 5300 CLEANED EXCESSIVE AMOUNT OF DIRT & GREASE FROM ALL FLAP SURFACES AS REQUIRED. SANDED ALL AREAS ON BOTH INBD FLAPS SO THE FWD EDGE OF THE ABRASION STRIP HAS SMOOTH TRANSITION TO ADJACENT PAINT SURFACE IAW AMM. INTERROGATED FECU, NO ASYMMETRY FAULTS NOTED, FLAPS OPERATE SMOOTHLY.