As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING OPERATIONAL CHECKS FOLLOWING MAINTENANCE, THE FLAP MANUAL OVERIDE LEVER COULD NOT BE MOVED. TROUBLESHOOTING REVEALED THAT THE FLAP 4-WAY, 3-POSITION, MANUAL OVERRIDE INPUT SHAFT WAS SEIZED. REPLACED THE VALVE WITH AN OVERHAULED ASSEMBLY. OPERATION OF THE REPLACMENT VALVE WAS FOUND SATISFACTORY.