As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SLATS FAILED TO RETRACT AFTER TAKEOFF. DUMPED FUEL AND RETURNED TO FIELD FOR A SAFE LANDING. FOUND NR 4 AND 5 SLAT JACK SCREWS LOCKED OUT AND RT FRICTION BRAKE FAILED TORQUE CHECK. REPLACED NR 4 JACK SCREW IAW 27-81-27 PG 401, NR 5 SLAT JACK SCREW IAW 27-81-28 PG 401 AND RT FRICTION BRAKE IAW 27-81-47 PG 401. A/C RETURNED TO SERVICE.