As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TE FLAPS WILL NOT OPERATE IN HYD POWER, WILL OPERATE IN ALTERNATE MODE. REPLACED THE ROTARY ACTUATOR FOR THE BYPASS VLV ON THE TE FLAP PDU IAW MM 27-51-32 PARAGRAPH J STEPS 1-10. FLAPS NOW OPERATE IN ALTERNATE & HYD MODES, PN FOR ACTUATOR ON WAS 734-15290-01 SN 58-3281, OFF PN FOR ACTUATOR OFF WAS 734-15290-01 & SN 92-2416 ON.