As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING WALK-AROUND, FOUND LEFT MAIN GEAR TRUCK POS ACTUATOR BROKEN. INTERNAL PISTON SEIZED UP ON ACTUATOR ROD END. LOG003 AUTO SPEEDBRAKE EICAS MESSAGE SET BY DAMAGED ACTUATOR. VERIFIED CAUSE FOR MESSAGE IN EXISTING FAULTS IN MAT. REPLACED LT MAIN LANDING GEAR TRUCK POSITION ACTUATOR PER MM. OPERATIONAL CHECK GOOD.