What was found
FLT 4240 - ON APPROACH INTO ATL, THE LANDING GEAR DID NOT EXTEND USING THE NORMAL METHOD. CREW BROKE OFF THE APPROACH AD CALLED FOR THE CHECKLIST. CREW ONLY GOT THREE RED B INDICATION LIGHTS. THE A LIGHTS WERE INOPERATIVE. CREW USED EMERGENCY ELECTRICAL OVERRIDE AND EXTENDED THE GEAR. CREW HEARD THE GEAR EXTEND AND RECEIVED THREE GREEN B INDICATOR LIGHTS. CREW ATTEMPTED TO RESET THE A INDICATOR, BUT IT FAILED TO RESET. CREW DECLARED AND EMERGENCY AND LANDED SAFELY. MAINTENANCE FOUND A SHORT IN THE WIRE FROM CIRCUIT BREAKER A INDICATION TO HANDLE AND RELAY BOX. MAINTENANCE REPLACED ENTIRE WIRE. OPERATIONAL CHECKS WERE GOOD. AIRCRAFT RETURNED TO SERVICE. (M)