As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE GEAR HAD TO BE EXTENDED BY ALTERNATE SYSTEM, HAD A RED GEAR LIGHT AND NO ALTERNATE NOSE GEAR OPEN LIGHT. GPWS SYSTEM GAVE AN AURAL GEAR WARNING, CYCLED GEAR. *S/D* DETERMINED THAT GEAR HANDLE WAS NOT MOVING INTO FORWARD DETENT WHEN PUT IN DOWN POSITION. CLEANED SHAFT AND DEBRIS FROM GEAR HANDLE MODULE. CYCLED NOSE GEAR NUMEROUS TIMES, OPS CHECKS OK.