As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLAP EXTENSION, THE FLAPS WOULD NOT EXTEND BEYOND 20 DEGREES. THE MALFUNCTION DID NOT INTERFERE WITH THE SAFE OPERATION OF THE FLIGHT. THE FLIGHT WAS COMPLETED NORMALLY AND PASSENGERS DEPLANED NORMALLY. THE FLAP CONTROL LEVER WAS REPLACED. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RETURNED TO SERVICE.