As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNABLE TO EXTEND NOSE WHELL ON FINAL APPROACH. USED GRAVITY EXTENSION AND NOSE GEAR LOWERED. LANDED BOS WITHOUT INCIDENT AND AIRCRAFT TOWED TO GATE DUE TO LOSS OF NOSE WHEEL STEERING. PULLED CVR CIRCUIT BREAKER. CLOSED NOSE WHEEL DOORS TO ACTIVATE SEQUENCE VALVE FOR STEERING TO RETURN. NO VISUAL DISCREPANCIES NOTED. AIRCRAFT IS BEING FERRIED TO JFK FOR FURTHER TROUBLE SHOOTING.