As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - AILERON LOCKOUT EICAS CAME ON DURING DESCENT APPROX 10,OOO FT. T/S IAW FIM 27-11-00/101 NO FAULTS ON BOTH SAM IAW FIG 104A, CKD ALL CONNECTION FOUND NO FAULTS. DURING AILERON LOCKOUT TEST LT ACTUATOR APPEARS TO STALL. REPLACED SAME AND OPS CKD OK. SYS OK FOR SERVICE IAW AMM 27-11-44-422-016.