As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DEPARTURE, ON FLAP RETRACTION THE OTBD FLAPS WOULD NOT RETRACT ABOVE 4 DEGREES. ACFT RETURNED TO DEPARTURE AND LANDED WITHOUT INCIDENT. POST FLIGHT INSPECTION WAS PERFORMED, FLAP SYS WAS LUBRICATED AND OPS CHECK PERFORMED WITH NO DEFECTS NOTED. ACFT WAS RETURNED TO SERVICE.