What was found
FLL - FLT919 - ON APPROACH TO FLL, UPON LOWERING LANDING GEAR, CREW RECEIVED A NOSE LANDING GEAR RED UNSAFE LIGHT WITH NO MAIN GEAR INDICATION. CREW ACCOMPLISHED QUICK REFERENCE HANDBOOK PROCEDURES AND RESET A CIRCUIT BREAKER. CREW THEN RECEIVED A NORMAL GEAR INDICATION OF THREE GREEN LIGHTS. A FLY-BY THE TOWER WAS ALSO ACCOMPLISHED TO CONFIRM GEAR WAS DOWN. FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE TROUBLESHOT SYSTEM USING AMM FAULT ISOLATION 32-61-00, LANDING GEAR POSITION INDICATION AND WARNING SYSTEM. REPLACED FILE CARD M983 (GEAR RED LIGHT). ACCOMPLISHED TESTS PER AMM 32-33-00 (NOSE GEAR EXT AND RETRACT) AND 32-09-10-725 (TEST OF PROX CARDS). NO FAULTS. OPS CHECK GOOD.