As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DTW - FLT 3357 - ON APPROACH, LEFT GEAR INTRANSIT LIGHT FAILED TO ILLUMINATE UPON GEAR EXTENSION. ALL TESTS WERE NORMAL. THE AIRCRAFT CONTINUED TO DTW. MAINTENANCE CLEANED AND LUBED THE INTRANSIT SWITCHES. SYSTEM OPERATED SATISFACTORILY. (X)