As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT FROM PUNTA CANA, THE CREW NOTICED A SLIGHT VIBRATION AND ERRATIC SYSTEM 'A' PRESSURE FROM NR 1 ENGINE. TURNED OFF NR 1 'A' SYSTEM PUMP. VIBRATION AND ERRATIC PRESSURE CEASED. FLIGHT WENT TO MIAMI FOR REPAIR. REPLACED NR 1 ENGINE HYDRAULIC PUMP PER MM REFERENCE. OPS CHECKED AND LEAK CHECKED OK. FLIGHT DIVERTED TO MIAMI FOR REPAIR BEFORE CONTINUING TO NAS AS SCHEDULED.