As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BWI - FLT 254 - WHEN LANDING GEAR WAS EXTENDED, CREW RECEIVED 3 GREEN LIGHTS AND 3 RED LIGHTS. GEAR WAS CYCLED AND NORMAL GEAR INDICATION WAS RECEIVED, 3 GREEN LIGHTS AND NO RED LIGHTS. FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE ADJUSTED GEAR HANDLE DOWNLOCK SWITCH AND LUBED GEAR HANDLE SLIDE LOCK. OPERATIONAL CHECK NORMAL. (M)