What was found
BWI - FLT 1623 - WHEN GEAR WAS EXTENDED FOR LANDING AT BWI, THE CREW RECEIVED 3 GREEN AND 3 RED GEAR INDICATION LIGHTS WITH GROUND PROXIMITY WARNING. THE GEAR WAS CYCLED AND ON THE THIRD TRY, THE CREW RECEIVED 3 GREEN LIGHTS WITH NO RED LIGHTS. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE SUPPORT BRACKET FOR LANDING GEAR LEVER SWITCH LOOSE. THE SUPPORT BRACKET WAS ADJUSTED IAW MM 32-61-11 AND GEAR INDICATIONS AND OPERATION WERE GOOD. (X)