As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLAP ACTUATION SLUGGISH WITH ENGINE RUNNING. WOULD NOT OPERATE USING AUXILIARY SYSTEM. FOUND FLAP SELECTOR VALVE INTERNAL SPOOL ACCESS CAP HAD NEVER BEEN SAFETIED (NO SAFETY WIRE MARKS ON UNIT) AND HAD BACKED OUT 3 TURNS. REPLACED SELECTOR VALVE (REPLACEMENT UNIT WAS SAFETIED WITH LEAD SEAL). OPERATION NORMAL. (X)