What was found
RIGHT LANDING GEAR DOWN LIGHT DID NOT COME ON AFTER GEAR EXTENSION. PILOT TRIED SEVERAL RETRACTIONS AND EXTENSIONS, BUT LIGHT WOULD NOT COME ON. SOUNDS DURING EXTENSION SEEMED NORMAL. WHEN A/C TOUCHED DOWN AND STARTED ROLL-OUT, THE RT GEAR FOLDED ONTO INBOARD DOOR. PROPELLER STRUCK GROUND AND FLAPS WERE DAMAGED. FOUND GEAR LOCK BELLCRANK PUSH/PULL ROD BROKE AT OTBD ROD END ALLOWING GEAR TO COME UNLOCKED. APPEARS TO BE SOME STRESS CRACKS IN ROD WHERE BEARING IS MOUNTED.