As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF UNABLE TO RETRACT INBOARD FLAPS ABOVE 5 DEGREES EITHER ELECTRICALLY OR HYDRAULIC. DUMPED FUEL AND RETURNED TO FIELD. *S/D* REPLACED BOTH RIGHT HAND INBOARD FOREFLAP SEQUENCING CARRIAGES PER MAINTENANCE MANUAL. OPS CHECKED OK.