As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - FLT 902 - AFTER TAKEOFF MIA WHEN LANDING GEAR RETRACTED, LEFT MAIN LANDING GEAR RED LIGHT REMAINED ILLUMINATED. AIRCRAFT RETURNED TO MIA AND LANDED WITHOUT INCIDENT. REPLACED LEFT MAIN LANDING GEAR UPLOCK SWITCH 35GB. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)