As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 354 - AFTER TAKEOFF FROM BOS, CREW RECEIVED A NOSE LANDING GEAR RED LIGHT ALONG WITH A VIBRATION. CREW DECIDED TO RETURN TO FIELD TO BOS. RECEIVED THREE GEAR GREEN LIGHTS WHEN GEAR WAS LOWERED. FLIGHT LANDED WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE FOUND THE NOSE LANDING GEAR LOCK ACTUATOR HYDRAULIC LINE LEAKING. REMOVED AND REPLACED HYDRAULIC LINE. LEAK CHECK AND OPERATIONAL CHECK GOOD. (M)