C210 NOSE GEAR COLLAPSED DURING LNDG AFTER GEAR WAS MANUALLY PUMPED TO THE DOWN POS.

Narrative

ON MAY/THU/02 AT XA05; MY STUDENT AND I STARTED OUT ON HIS FIRST INST LESSON. WE PERFORMED BASIC MANEUVERS WITH MY STUDENT UNDER THE HOOD. AT ABOUT XA55 WE DECIDED TO RETURN TO THE ARPT. AS WE ENTERED BASE LEG; MY STUDENT CALLED HE WAS LOWERING THE LNDG GEAR. AFTER SEVERAL SECONDS WAITING FOR THE GREEN LIGHT; I SAID THERE SEEMED TO BE A PROB WITH THE GEAR BECAUSE WE DID NOT GET A GREEN LIGHT. I THEN PROCEEDED TO RECYCLE THE GEAR AND WHILE WAITING FOR IT TO RECYCLE; GOT THE EMER CHKLIST OUT. I THEN TRIED TO RECYCLE THE GEAR 3 MORE TIMES BUT STILL DID NOT GET A GREEN LNDG GEAR LIGHT. I THEN PULLED THE EMER GEAR HANDLE OUT WHICH WAS VERY STIFF. AFTER SEVERAL SECONDS OF TRYING TO PULL THE HANDLE OUT; I ASKED MY STUDENT TO DO IT SINCE HE COULD USE HIS R HAND AND I TOOK OVER ACFT CTLS. MY STUDENT PUMPED FOR SEVERAL SECONDS UNTIL IT WOULD NOT PUMP ANYMORE; BUT WE STILL DID NOT HAVE A GREEN GEAR LIGHT INDICATION. I THEN ASKED THE ACFT THAT JUST LANDED IF THEY WOULD MIND CHKING OUR NOSE LNDG GEAR VISUALLY TO SEE IF IT WAS IN THE PROPER POS AS WE FLEW BY. WE COULD SEE OUR MAIN LNDG GEAR FROM INSIDE AND COULD TELL THEY WERE DOWN. THEIR RESPONSE WAS IT LOOKED LIKE IT WAS DOWN AND POINTED IN THE RIGHT DIRECTION. AT THAT POINT WE DECIDED TO LAND THE AIRPLANE. AFTER TOUCHDOWN AND AS THE ACFT STARTED TO SLOW DOWN THE WT WAS APPLIED TO THE GEAR; THE NOSE GEAR COLLAPSED.