As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA - CREW REPORTED RIGHT HYDRAULIC QUANTITY SHOWING DECREASE DURING CLIMBOUT. FLIGHT LANDED MIA WITHOUT INCIDENT. INSPECTED AIRCRAFT AND FOUND LOOSE B-NUT AT RIGHT ENGINE HYDRAULIC PYLON MANIFOLD FILTER HOUSING. RE-SECURED FITTING. SYSTEM GROUND CHECK NORMAL OPERATION.