As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT HMV, LANDING GEAR CHECK OUT THE NOSE GEAR EMERGENCY EXTENSION FAILED TO OPERATE DUE TO THE BALL NUT AND SCREW ASSY BEING RUSTED AND FROZEN UP. REF IPC 32-31-00-06 ITEM 185 (P/N 10-60744-1). THE ASSY WAS REPLACED AND THE CHECK OUT COMPLETED SATISFACTORY.