What was found
JFK - JUST PRIOR TO LANDING AND LANDING GEAR HANDLE IN THE DOWN POSITION, RIGHT MAIN LIGHT CAPSULE WOULD NOT SHOW GREEN. ACCOMPLISHED LIGHT TEST AND STILL BLANK. REPLACED BULBS BUT NO HELP. NO GEAR UNSAFE OR DISAGREE MESSAGES NOTED. FLYBY PROVED GEAR WAS IN THE DOWN POSITION. EMERGENCY DECLARED FLIGHT LANDED JFK WITHOUT INCIDENT. FOUND THE RIGHT MAIN LANDING GEAR CAPSULE WAS DAMAGED CAUSING THE FAULT. REPLACED LIGHT CAPSULE. SYSTEM GROUND CHECK NORMAL OPERATION.