As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 3072 - IN CRUISE FLIGHT WITH GEAR UP, THE LEFT LANDING GEAR ADVISORY LIGHT (AMBER) WOULD FLICKER ON AND OFF. THE LIGHT WOULD EXTINGUISH WITH THE GEAR LOWERED WHILE ON APPROACH TO DTW. MAINTENANCE PERFORMED TROUBLESHOOTING, BUT WERE UNABLE TO DUPLICATE THE DISCREPANCY. (X)