What was found
OVERCENTER LOCKING SPRINGS, 2 EACH, ON INTERNAL LANDING GEAR CAME OFF ALLOWING OR CAUSING OVERCENTER LOCKING MECHANISM TO RELEASE ALLOWING LANDING GEAR TO ROTATE REARWARD TO UP POSITION. THIS OCCURRED DURING ROLLOUT FOLLOWING NORMAL LANDING. NO APPRECIABLE DAMAGE TO AIRCRAFT. SPRINGS SLIGHTLY DEFORMED. NEW SPRINGS INSTALLED, TESTED, AND ALL OK NOW.