As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - FLT 915 - DURING CLIMB, YELLOW SYSTEM HYDRAULIC LOW PRESSURE LIGHT ILLUMINATED. FLIGHT RETURNED TO MIA AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE UPPER ENGINE DRIVEN HYDRAULIC PUMP SHAFT SHEARED. REPLACED ENGINE DRIVEN HYDRAULIC PUMP AND MOTORIZED ENGINE WITH NO LEAKS NOTED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)