What was found
DURING CLIMB, PASSING APPROX 270 KTS, GOT EICAS MSG AILERON LOCKOUT WITH OVERHEAD LIGHT, ALSO, AIL-LOCK. FLIGHT CONTINUED, DECLARED EMER DURING APPROACH. THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. ACFT REMOVED FROM SERVICE. R & R THE LT OTBD AILERON LOCKOUT ACTUATOR IAW AMM 27-11-4.