As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED THAT ON DEPARTURE, WHEN GEAR HANDLE SELECTED UP, MLG DID NOT RETRACT. UNSAFE INDICATIONS ON OVERHEAD AND NORMAL GEAR INDICATOR PANEL. THE ACFT WAS REMOVED FROM SERVICE. FOUND NLG GAS CHARGING VALVE LEAKING AND NO NITROGEN CHARGE IN NLG. R & T NLG GAS CHARGING VALVE IAW CMM 32-28-01 AND SERVICED NLG IAW JIC 12-12-32. LEAK CHECK EXTENSION CHECK GOOD, SEE ITEM NR 2 FOR GEAR SWING. THE ACFT WAS RETURNED TO SERVICE.