As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA INFLIGHT T639/28MAY - REPEATER RETURNED TO MIA DUE TO BOTH NOSE LANDING GEAR DOOR INDICATORS ILLUMINATED. LANDED MIA WITHOUT INCIDENT. AIRCRAFT TAKEN OUT OF SERVICE. FOUND DOOR ACTUATOR CYLINDER EYEBOLT END FROZEN. REPLACED DOOR ACTUATOR CYLINDER AS REQ PER 32-31-16. SYSTEM GROUND CHECKED NORMAL OPERATION.