What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
While on approach to land at John Wayne airport the pilot selected the landing gear handle down and confirmed there were 3 green down and locked lights and no red light, indicating all 3 landing gear were down and locked. While crossing the numbers on rwy 20R another pilot holding short informed the tower that "the landing gear on the 310 is not locked" . The pilot aborted the landing and proceeded to go around. The pilot flew out over the ocean to troubleshoot the problem and follow the emergency gear deployment procedures in the POH. During the troubleshooting the pilot noticed the right landing gear down and locked light would stay illuminated even when the gear was up. 3 low fly overs were made and the tower said the landing gear looked locked but a person on the ground said the right gear was "wagging" and not locked. The pilot landed the plane on rwy 20R and upon touchdown the right landing gear collapsed.
As the FAA filed it
WHILE ON APPROACH TO LAND AT JOHN WAYNE AIRPORT THE PILOT SELECTED THE LANDING GEAR HANDLE DOWN AND CONFIRMED THERE WERE 3 GREEN DOWN AND LOCKED LIGHTS AND NO RED LIGHT, INDICATING ALL 3 LANDING GEAR WERE DOWN AND LOCKED. WHILE CROSSING THE NUMBERS ON RWY 20R ANOTHER PILOT HOLDING SHORT INFORMED THE TOWER THAT "THE LANDING GEAR ON THE 310 IS NOT LOCKED" . THE PILOT ABORTED THE LANDING AND PROCEEDED TO GO AROUND. THE PILOT FLEW OUT OVER THE OCEAN TO TROUBLESHOOT THE PROBLEM AND FOLLOW THE EMERGENCY GEAR DEPLOYMENT PROCEDURES IN THE POH. DURING THE TROUBLESHOOTING THE PILOT NOTICED THE RIGHT LANDING GEAR DOWN AND LOCKED LIGHT WOULD STAY ILLUMINATED EVEN WHEN THE GEAR WAS UP. 3 LOW FLY OVERS WERE MADE AND THE TOWER SAID THE LANDING GEAR LOOKED LOCKED BUT A PERSON ON THE GROUND SAID THE RIGHT GEAR WAS "WAGGING" AND NOT LOCKED. THE PILOT LANDED THE PLANE ON RWY 20R AND UPON TOUCHDOWN THE RIGHT LANDING GEAR COLLAPSED.