As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOPILOT UNABLE TO CONTROL ROLL, UNDER MANUAL CONTROL EXCESSIVE FORCE NEEDED TO BREAK BINDING. FLIGHT SPOILERS UNABLE TO DEPLOY. TROUBLESHOT IAW AMM 27-10-00, FOUND LARGE AREA OF ICE BELOW LT AILERON PROGRAMMER. CLEANED AREA, CLEANED CENTER BULK DRAINS AND CHECKED INTEGRITY OF LINES IAW AMM 51-41-02 AND SB 747-51A2057.