As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 821 - GUM - AIRCRAFT AIR RETURNED AFTER TAKEOFF CREW ADVISED THAT DURING FLAP RETRACTION, INBOARD FLAPS STUCK BETWEEN 2 AND 5 DEGREES. FOUND LEFT FLAP THRUST BEARING FROZEN. REPLACED THRUST BEARING AND SYSTEM OPERATIONAL CHECKED SATISFACTORY. (Z)