As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DTW - FLT 511 - RIGHT MLG LIGHT WAS NOT ON DURING LANDING INTERMITTENTLY. THE LIGHT WOULD FLASH ON PRESS-TO-TEST INTERMITTENTLY. REPLACED WIRE IN RT MAIN DOWNLOCK HARNESS. INSPECTED SYSTEM. REPLACED RT MAIN DOWNLOCK SWITCH. SYSTEM CHECK GOOD IAW DC-9 MM 32-60. (X)