As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE NOSE GEAR SELECTOR VALVE FAILS ON THE RETRACT MODE. IF IT FAILS AFTER THE GEAR HAS ALREADY EXT., THE ONLY SYMPTOM IS A LOSS OF NOSE STEERING. NOSE STEERI NG CAN BE MEL'D. IF THE AIRCRAFT DISPATCHES PER THE MEL, THE NOSE GEAR WILL RETRACT, BUT WILL NOT EXTEND NORMALLY. A MANUAL FREE FALL WOULD HAVE TO BE PERFORMED.