As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 3383 - EN ROUTE FROM MDT TO DTW, THE LEFT MAIN GEAR UNSAFE LIGHT AND GEAR INTRANSIT LIGHT ILLUMINATED. THE AIRCRAFT CONTINUED TO DTW AND LANDED WITHOUT INCIDENT. MAINTENANCE PERSONNEL REPLACED THE LANDING GEAR SELECTOR VALVE. ALL SYSTEMS OPERATED SATISFACTORILY. (M)