As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH NR 4 L/E SLAT INDICATED INTRANSIT, RECYCLED PER QRH WITH NORMAL DEPLOYMENT. UPON LANDING CYCLE FLAPS/SLATS AND NOTED A LOUD BANG AND ASYMMETRICAL RATE OF DEPLOYMENT ON NR 4 L/E SLAT, NR 4 L/E SLAT OUTBOARD SIDE STICKS. REMOVED AND REPLACED NR 4 L/E SLAT DETENT BOLT PER MM.