As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT GEAR UNSAFE LIGHT ILLUMINATED WITH THE LANDING GEAR RETRACTED. WHEN THE CREW LOWERED THE GEAR RECEIVED 3 DOWN AND LOCKED GREEN INDICATIONS. AN EMERGENCY WAS DECLARED FOR THE RETURN TO DEPARTURE. MAINTENANCE RIGGED BOTH OF THE MLG DOOR ACTUATORS, BOTH OF THE MLG DOOR LATCHES, AND ADJUSTED BOTH THE MLG UPLOCK SENSORS. OPS CHECKED GOOD AND THE AIRCRAFT HAS RETURNED TO SERVICE.