SMT NOSE GEAR DID NOT LOCK; COLLAPSED ON LNDG.

Narrative

WHILE IN THE TFC PATTERN; GEAR DOWN WAS SELECTED. THE DOWN AND LOCKED LIGHT DID NOT ILLUMINATE. THE BULB IN THE GEAR POS INDICATORS WERE THEN TESTED AND WERE FOUND TO BE WORKING. THE LNDG GEAR WAS THEN CYCLED 8-10 TIMES WITHOUT SUCCESS. THE MAIN GEAR FELT AS IF LOCKED DOWN IN POS; AND WERE; BUT THE NOSE GEAR DIDN'T SOUND LOCKED. SEVERAL LOW PASSES WERE MADE BY AURORA TWR. I MADE THE DECISION TO LAND. PRIOR TO TOUCHDOWN (300 FT AGL) I CUT OFF THE FUEL TO THE ENGS VIA THE MIXTURE CTL AND THE FUEL SELECTOR VALVES; TURNED OFF THE MAGNETOS AND LANDED. UPON TOUCHDOWN THE NOSE PITCHED DOWN AND THE ACFT (SMT) SKIDDED DOWN THE RWY. THE ACFT VEERED L AND CAME TO REST OFF THE L SIDE OF THE RWY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO. IT'S BEEN DETERMINED THAT THE PUSH TUBE FROM THE GEAR XMISSION HAD KINKED. NO ANSWER AS TO WHY IT KINKED. HOWEVER IN TALKING ABOUT HIS PROBLEM RPTR HAS HEARD OF OTHER INCIDENTS WHERE THE NOSE GEAR DID NOT EXTEND AND LOCK. IT HUNG UP ON THE 'UP LOCK HOOK.' THIS OCCURRED AS GEAR WAS EXTENDED IN A TURN. THIS IS A VERY SMALL HOOK AND WITH THE SIDE LOAD FROM A TURN IT CAN HANG UP. RPTR HAS DECIDED 'NO MORE ELECTRICAL GEAR; HE'S STICKING TO HYD FROM NOW ON.' ANALYST CAN ONLY ASSUME HE IS LOOKING FOR DIFFERENT TYPES OF PROBLEMS.