A C310 ON LNDG ROLLOUT HAD THE NOSE GEAR COLLAPSE INCURRING DAMAGE TO PROPS; LOWER NOSE SHEET METAL AND POSSIBLE ENG DAMAGE.

Narrative

I BASICALLY SUFFERED A NOSE GEAR COLLAPSE AFTER A SMOOTH APCH AND LNDG AT DUSK. THERE WAS NOTHING OUT OF THE ORDINARY WITH THE INITIAL APCH. I HAD 3 GREEN LIGHTS ON MY GEAR INDICATOR AND IT WAS STILL LIGHT ENOUGH TO VISUALLY VERIFY THE NOSE GEAR WAS DOWN WITH MY MIRROR. I THEN MADE AN UNEVENTFUL TOUCHDOWN AND HAD PULLED OFF THE THROTTLE. WITHIN A SECOND OR TWO OF APPLYING THE BRAKES; THE NOSE GEAR RETRACTED FOR A REASON I DO NOT KNOW OF. AND SO I SLID FOR ABOUT 300 FT I SUPPOSE AND CAME TO REST WITHIN 10 FT OF CTRLINE ON RWY 15. THE AIRPLANE CAME TO REST WITH THE 2 MAIN GEAR DOWN AND THE PLANE RESTING ON ITS NOSE WITH THE TAIL IN THE AIR. I BELIEVE THE CAUSE OF THE PROB TO BE A FALSE POSITIVE INDICATION OF THE GEAR LOCK. THERE WERE 3 GREEN LIGHTS ON THE INDICATOR AND NO SOUNDING OF WARNING HORNS IN THE COCKPIT UPON LNDG. THIS; I BELIEVE; IS READILY CORROBORATED BY LOOKING AT THE NOSE GEAR ITSELF. THERE WAS NOTHING TO INDICATE THAT THE NOSE GEAR WAS IN THE NOSE CONE AT THE TIME OF THE LNDG. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED EVERYTHING WAS NORMAL ON THE LNDG AND ROLLOUT UNTIL THE NOSE LNDG GEAR COLLAPSED. BOTH PROPS HAD GND STRIKES AND SOME LOWER SKIN DAMAGE. THE CAUSE OF THE NOSE LNDG GEAR FAILURE IS UNKNOWN AS THE AIRPLANE HAS NOT BEEN JACKED FOR TROUBLESHOOTING.