As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 3019 - ON APPROACH TO DTW, THE LEFT GEAR DOWN AND LOCKED LIGHT FAILED TO ILLUMINATE. THE CREW RECYCLED THE GEAR AND A NORMAL INDICATION WAS RECEIVED. MAINTENANCE REPLACED THE LEFT MAIN LANDING GEAR OUTBOARD INDICATION SWITCH. SYSTEM OPERATED SATISFACTORILY. (M)