As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH MAIN LANDING GEAR SELECTED DOWN THE LEFT MAIN LANDING GEAR WON'T INDICATE DOWN AND LOCKED. AIRCRAFT DIVERTED TO DUJ. EMERGENCY DECLARED, AIRCRAFT LANDED WITH NO FURTHER INCIDENT. REMOVED AND REPLACED LT MLG ACTUATOR/DOWNLOCK SWITCH CK GOOD. P/N 114-380041-9, S/N 193A.