As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT, RT ENG HYDRAULIC QTY WENT TO 1 QT WITH AMBER LIGHT, HAD NORMAL PRESS INDICATION. LATER LOST HYDRAULIC PRESSURE AND QTY. FOUND HYDRAULIC RETURN LINE IN 48 SECTION WITH NUT LOOSE. REMOVED LINE, REPOSITIONED ANTI ROTATION BLOCK AND RE-INSTALLED LINE ON UNION. LEAK CHECK GOOD.