As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH WHEN CREW SELECTED FLAPS FROM 22 DEGREES TO 9 DEGREES. THE FLAPS FAILED AT 9 DEGREES. MAINTENANCE REMOVED AND REPLACED THE FLAP DRIVE UNIT IAW MM. OPERATIONAL CHECKS WERE SATISFACTORY AND AIRCRAFT WAS RETURNED TO SERVICE. (SW21200406012)