As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - CREW REPORTED ON FINAL NOSE LANDING GEAR FAILED TO EXTEND. HAD GEAR DOOR EICAS MESSAGE. ON SECOND APPROACH GEAR EXTENDED NORMALLY. FLIGHT LANDED DFW WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED NOSE GEAR SELECTOR BYPASS VALVE. SYSTEM GROUND CHECK NORMAL OPERATION.