As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH OF FLIGHT 6127 TO BOS CREW REPORTED A HYDRAULIC SYSTEM A FAILURE. THE CREW MANUALLY DEPLOYED THE LANDING GEAR AND FLIGHT LANDED WITHOUT INCIDENT. THE MAIN SYSTEM A PUMP WAS FOUND TO BE INOPERATIVE AND WAS REPLACED. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RETURNED TO SERVICE.