As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. ON APPROACH, THE CREW REPORTED UNABLE TO EXTEND FLAPS. LEADING EDGE DEVICES WERE EXTENDED WITH THE ALTERNATE FLAPS EXTENSION SWITCH. NO TRAILING EDGE OR LEADING EDGE DEVICES WOULD EXTEND BY FLAP LEVER POSITION ALONE. LANDING UNEVENTFUL. REMOVED AND REPLACED NR 3 FLAP SKEW SENSOR PER AMM 27-59-01. OPERATIONAL CHECK GOOD.