As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF UPON GEAR RETRACTION, LT MAIN GEAR SHOWED THE RED DISAGREEMENT LIGHT. RAN DISAGREE CHECKLIST. CYCLED GEAR DOWN AND GEAR WENT DOWN WITH 6 GREEN. MX SUSPECTED THE LANDING GEAR ACTUATOR WAS WEAK AND REMOVED AND REPLACED THE LT MLG ACTUATOR AND PERFORMED OPS CHECKS IAW SRM 32-32-10. RII INSPECTIONS COMPLIED WITH.