As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE NLG WAS VERY SLOW TO EXTEND AND INDICATE DOWN WHEN GEAR WAS LOWERED DURING TEST FLIGHT WHILE AIRCRAFT WAS IN D-CHECK AT MAN. MAINTENANCE FOUND THE NLG DOWNLOCK ACTUATOR LEAKING INTERNALLY. THE ACTUATOR WAS REMOVED AND REPLACED IAW MM 32-35-00.