As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN THE GEAR HANDLE WAS PLACED DOWN ON FINAL APPROACH, THE NLG DID NOT EXTEND. THE CHECKLIST WAS RUN AND THE GEAR WAS EXTENDED MANUALLY WITH THREE GREEN LIGHTS RECEIVED. THE AIRCRAFT LANDED NORMALLY. MAINTENANCE REMOVED AND REPLACED THE NLG LOCK ACTUATOR IAW MM 32-33-21. IN ADDITION, THE NLG HYDRAULIC MODULE WAS REPLACED AS A PRECAUTIONARY MEASURE IAW MM 32-33-31. LEAK AND OPERATIONAL CHECKS WERE GOOD.