As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT FLT 722 EN ROUTE CLT TO BWI. ON APPROACH, THE NOSE LANDING GEAR WAS SLOW TO EXTEND. FLIGHT ABORTED APPROACH AND MADE A GO-AROUND. CREW LOWERED THE GEAR BY USING THE ALTERNATE GEAR EXTENSION. FLIGHT LANDED WITHOUT FURTHER INCIDENT. THE AIRCRAFT WAS MAINTENANCE FERRIED TO PHL. MAINTENANCE REPLACED THE NLG SEQUENCE VALVE BYPASS VALVE.