What was found
PILOT DEPARTED SANTA FE, NM AND RETRACTED GEAR. THE TOWER NOTICED THE NOSE GEAR STILL HANGING DOWN. PILOT LOWERED GEAR, THE MAINS LOCKED DOWN BUT THE NOSE DID NOT LOCK DOWN. PILOT LANDED AND THE NOSE GEAR COLLAPSED. THE AFT END ATTACH FITTING OF THE PLUNGER ASSEMBLY (P/N 35-825094-4) FAILED. TOTAL TIME AND CYCLES ON THE NOSE GEAR IS UNKNOWN.