As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THE NLG DID NOT RETRACT WHEN SELECTED. AIRCRAFT RETURNED TO CLT LANDING WITHOUT INCIDENT. MAINTENANCE USING THE AIRCRAFT MANUALS REMOVED AND REPLACED THE NLG STRUT. TESTS AND SERVICING WERE DONE PER THE AIRCRAFT MANUALS. THE AIRCRAFT WAS RELEASED FOR SERVICE.