As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE NOSE GEAR DID NOT EXTEND INITIALLY WHEN THE GEAR WAS SELECTED DOWN ON APPROACH INTO IAH. THE GEAR WAS CYCLED RESULTING IN NORMAL EXTENSION AND INDICATIONS. THE AIRCRAFT LANDED AT IAH WITHOUT INCIDENT. MAINTENANCE FOUND THE NLG LOCK ACTUATOR AT FAULT. THE LOCK ACTUATOR WAS REMOVED AND REPLACED IAW MM 32-33-21. THE GEAR WAS SWUNG SEVERAL TIMES AND ALL OPERATION CHECKED GOOD.