As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED THAT DURING DESCENT FOR LANDING THE FLAP SYSTEM STOPPED EXTENSION BETWEEN THE 15 AND 35 POSITION. THE APPROACH AND LANDING WAS UNEVENTFUL. THE MAINTENANCE TEAM DETERMINED THE FLAP DRIVE WAS AT FAULT. THE FLAP DRIVE UNIT WAS REMOVED AND AN OVERHAULED UNIT WAS INSTALLED. ALL OPS CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE..